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-methyl-N-[(1S)-1-[4-(1,2,4-triazol-1-yl)phenyl]ethyl]-3,4-dihydro-2H-1,5-benzodioxepine-7-sulfonamide .
user
C20H22N4O4S
assistant