You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[benzyl-[2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methylsulfonylbutanoyl]amino]propanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C30H32N2O7S
assistant