Add the ability to store additional experimantal meta data for small molecule experiments. Molecule :: Analysis XREF Analysis class addition Concentration ?Text Condition class Additions Detection_method ?Text #Evidence //NMR, MALDI-MS, HPLC-UV, shotgun lipidomics Extraction_method ?Text #Evidence //MeOH, exometabolome, MeOH/Chloroform, 5% trichloroacetic acid