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 N-ethyl-2-[4-[(2S)-2-[(4-methoxyphenyl)sulfonylamino]-3-methylbutanoyl]-1,4-diazepan-1-yl]acetamide .
user
C21H34N4O5S
assistant