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 ethyl 4-[3-[6-(4-chlorophenyl)-3-cyanopyridin-2-yl]sulfanyl-2,5-dioxopyrrolidin-1-yl]benzoate .
user
C25H18ClN3O4S
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