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system
Provide the molecular formula for the IUPAC named substance N-[1-[(2'S,3R)-2'-cyano-2-oxospiro[1H-indole-3,4'-pyrrolidine]-1'-yl]-3-cyclopropyl-1-oxopropan-2-yl]-4-methoxy-1H-indole-2-carboxamide .
user
C28H27N5O4
assistant