You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 5-methyl-N-[3-[(4-methylphenyl)methylcarbamoyl]phenyl]-1,3,4-thiadiazole-2-carboxamide is given. What is its corresponding molecular formula?
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C19H18N4O2S
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