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The original copyright notice of MOPAC7:CC Notice of Public Domain nature of MOPACCC 'This computer program is a work of the United StatesC Government and as such is not subject to protection byC copyright (17 U.S.C. # 105.) Any person who fraudulentlyC places a copyright notice or does any other act contraryC to the provisions of 17 U.S. Code 506(c) shall be subjectC to the penalties provided therein. This notice shall notC be altered or removed from this software and is to be onC all reproductions.'CChanges made to MOPAC7 code in this work may be used/distributed under thesame rules as the original MOPAC7 package; this work is in Public Domain.