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What is the molecular formula of the compound with this IUPAC name (2E,5S)-5-(4-chlorophenyl)-N,N-diethyl-7-methyl-2-(1-methyl-2-oxoindol-3-ylidene)-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide ?
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C27H25ClN4O3S
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