You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3S,6S,7R,9aS)-6-[[(2S)-2-aminobutanoyl]amino]-7-(2-benzamidoethyl)-N-[2-(4-methoxyphenyl)ethyl]-5-oxo-1,2,3,6,7,8,9,9a-octahydropyrrolo[1,2-a]azepine-3-carboxamide .
user
C32H43N5O5
assistant