You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3-thiophen-3-yl-1,2,4-oxadiazol-5-yl)methyl 4-[[(2S)-oxolan-2-yl]methoxy]benzoate into molecular formula.
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C19H18N2O5S
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