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What is the molecular formula of the molecule 9-[4-[2-(diethylamino)ethoxy]phenyl]-8,12,14,15-tetrazatetracyclo[8.6.1.02,7.013,17]heptadeca-1(17),2,4,6,10,13,15-heptaene-16-carboxamide ?
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C26H28N6O2
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