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-(3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-4-methyl-3-morpholin-4-ylsulfonylbenzamide .
user
C21H23N3O4S2
assistant