You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-(6-tert-butyl-3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-4-(4-chloro-5-methyl-3-nitropyrazol-1-yl)butanamide ?
user
C21H26ClN5O3S
assistant