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What is the molecular formula of the molecule identified by 2-methyl-N-[6-[(1S,9R)-6-oxo-7,11-diazatricyclo[7.3.1.02,7]trideca-2,4-dien-11-yl]pyridin-3-yl]prop-2-enamide ?
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C20H22N4O2
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