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 S-[2-[4-[benzenesulfonyl(1H-pyrazol-4-yl)amino]phenyl]-2-oxoethyl] ethanethioate using the IUPAC nomenclature.
user
C19H17N3O4S2
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