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 4-[(Z)-[[2-[2-chloro-N-methylsulfonyl-5-(trifluoromethyl)anilino]acetyl]hydrazinylidene]methyl]benzoic acid ?
user
C18H15ClF3N3O5S
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