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 (1S,2S)-1-N-[2-chloro-5-fluoro-4-[(4-methyl-1,3-thiazol-2-yl)methylsulfonyl]phenyl]-2-N-ethyl-2-N-methylcyclohexane-1,2-diamine;formic acid .
user
C21H29ClFN3O4S2
assistant