You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[methyl(1-methylsulfanylpropan-2-yl)amino]-4-oxobutanoic acid into its molecular formula.
user
C24H28N2O5S
assistant