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system
Name the molecular formula for the molecule established as (4R)-4-methyl-5-[2-[1-(thiophen-2-ylmethyl)tetrazol-5-yl]sulfanylacetyl]-3,4-dihydro-1H-1,5-benzodiazepin-2-one using the IUPAC nomenclature.
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C18H18N6O2S2
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