diff --git a/src/mofdscribe/featurizers/text/mofdscriber.py b/src/mofdscribe/featurizers/text/mofdscriber.py
index d76406c..f39c056 100644
--- a/src/mofdscribe/featurizers/text/mofdscriber.py
+++ b/src/mofdscribe/featurizers/text/mofdscriber.py
@@ -4,6 +4,7 @@
 from collections import Counter
 from typing import Dict, Optional, Union
 
+import numpy as np
 from moffragmentor import MOF as MOFFragmentorMOF  # noqa: N811
 from pymatgen.analysis.graphs import StructureGraph
 from pymatgen.core import IStructure, Structure
@@ -39,6 +40,7 @@ def __init__(
         describer_kwargs: Optional[Dict] = None,
         incorporate_smiles: bool = True,
         describe_pores: bool = True,
+        describe_rcsr: bool = True,
     ) -> None:
         """Construct an instance of the MOFDescriber.
 
@@ -50,12 +52,15 @@ def __init__(
             incorporate_smiles (bool): If True, describe building blocks.
             describe_pores (bool): If True, add description of the geometry
                 of the MOF pores.
+            describe_rcsr (bool): If True, add RCSR code of the MOF
+                topology.
         """
         describer_defaults = {"describe_oxidation_states": False, "describe_bond_lengths": True}
         self.condenser_kwargs = condenser_kwargs or {}
         self.describer_kwargs = {**describer_defaults, **(describer_kwargs or {})}
         self.incorporate_smiles = incorporate_smiles
         self.describe_pores = describe_pores
+        self.describe_rcsr = describe_rcsr
 
     def _get_bb_description(self, structure: Structure, structure_graph: StructureGraph) -> str:
         moffragmentor_mof = MOFFragmentorMOF(structure, structure_graph)
@@ -65,7 +70,21 @@ def _get_bb_description(self, structure: Structure, structure_graph: StructureGr
 
         linker_smiles = " ,".join("{} {}".format(v, k) for k, v in linker_counter.items())
         metal_smiles = " ,".join("{} {}".format(v, k) for k, v in metal_counter.items())
-        return "Linkers: {}. Metal clusters: {}.".format(linker_smiles, metal_smiles)
+        bb_string = "Linkers: {}. Metal clusters: {}. ".format(linker_smiles, metal_smiles)
+
+        rcsr_code = fragments.net_embedding.rcsr_code
+        if rcsr_code and len(rcsr_code) > 1:
+            rcsr_string = "RCSR code: {}. ".format(rcsr_code)
+
+        output_string = ""
+        if self.incorporate_smiles:
+            output_string += bb_string
+        if self.describe_rcsr:
+            output_string += rcsr_string
+
+        return output_string
+
+        return output_string
 
     def _get_pore_description(self, structure):
         pore_featurizer = MOFMultipleFeaturizer(
@@ -87,11 +106,15 @@ def _get_robocrys_description(self, structure):
 
     def _featurize(self, structure: Structure, structure_graph: StructureGraph):
         description = self._get_robocrys_description(structure)
-        if self.incorporate_smiles:
-            description += " " + self._get_bb_description(structure, structure_graph)
+        if self.incorporate_smiles or self.describe_rcsr:
+            if description[-1] != " ":
+                description += " "
+            description += self._get_bb_description(structure, structure_graph)
         if self.describe_pores:
-            description += " " + self._get_pore_description(structure)
-        return description
+            if description[-1] != " ":
+                description += " "
+            description += self._get_pore_description(structure)
+        return np.array([description])
 
     def featurize(self, structure: Union[Structure, IStructure]):
         return self._featurize(structure, get_sg(structure))