You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(4-benzyl-5-methyl-1,2,4-triazol-3-yl)sulfanylmethyl]-3-(2-chlorophenyl)-1,2,4-oxadiazole is the IUPAC name of a molecule. Please give its molecular formula.
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C19H16ClN5OS
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