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What is the molecular formula of the molecule identified by (1S,9R)-11-[3-(3,5,9-trimethyl-7-oxofuro[3,2-g]chromen-6-yl)propanoyl]-7,11-diazatricyclo[7.3.1.02,7]trideca-2,4-dien-6-one ?
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C28H28N2O5
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