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What is the molecular formula of the molecule 5-[(3aS,4R,7S,7aR)-4,7-dimethyl-1,3-dioxo-3a,5,6,7a-tetrahydro-4,7-epoxyisoindol-2-yl]pyrimidine-2-carbonitrile ?
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C15H14N4O3
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