You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-3-(2-aminophenyl)sulfonyl-2-[(2R)-1-hydrazinyl-4-methyl-1-oxopentan-2-yl]-N-hydroxy-5-methyl-3-(2-phenylethyl)hexanamide by IUPAC nomenclature, provide its molecular formula.
user
C27H40N4O5S
assistant