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system
Name the molecular formula for the molecule established as methyl N-[4-[[3-(3-methyl-1,2,4-oxadiazol-5-yl)-5,7-dihydro-4H-thieno[2,3-c]pyran-2-yl]sulfamoyl]phenyl]carbamate using the IUPAC nomenclature.
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C18H18N4O6S2
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