You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named acetamide;methanol;[4-(propanoylamino)phenyl]methyl N-[(3R)-6-amino-3a-methoxy-7-methyl-5,8-dioxo-1,2,3,4-tetrahydropyrrolo[1,2-a]indol-3-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C27H37N5O8
assistant