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system
Provide the molecular formula for the IUPAC named substance [(2S)-1-oxo-1-[(2-oxo-1,3-dihydrobenzimidazol-5-yl)amino]propan-2-yl] (1S,2R,4S)-bicyclo[2.2.1]heptane-2-carboxylate .
user
C18H21N3O4
assistant