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 2,4-dichloro-N-(5-chloro-2,4-dimethoxyphenyl)-5-[(3S)-3-methylpiperidine-1-carbonyl]benzenesulfonamide ?
user
C21H23Cl3N2O5S
assistant