You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[5-[4-(ethylamino)phenyl]-3-(trifluoromethyl)pyrazol-1-yl]benzenesulfonamide using the IUPAC nomenclature.
user
C18H17F3N4O2S
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