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system
Name the molecular formula for the molecule established as ethyl 7-(3-methoxy-4-propan-2-yloxyphenyl)-5-[(5-phenyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylate using the IUPAC nomenclature.
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C26H27N7O4S2
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