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system
Name the molecular formula for the molecule established as methyl 3-[[(3R,7aS)-5-oxo-7a-phenyl-2,3,6,7-tetrahydropyrrolo[2,1-b][1,3]thiazole-3-carbonyl]amino]-4-methylbenzoate using the IUPAC nomenclature.
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C22H22N2O4S
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