You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-thiophen-3-yl-1,2,4-oxadiazol-5-yl)methyl 3-(2,5-dioxopyrrolidin-1-yl)benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H13N3O5S
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