You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S,4R)-1-[2-[[(2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-methylbutanoyl]amino]-2-methylpropanoyl]-4-phenylmethoxypyrrolidine-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C37H43N3O7
assistant