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What is the molecular formula of the molecule 16-(2-aminoethylamino)-3-cyclohexyl-10,13-diazapentacyclo[11.7.1.02,10.04,9.017,21]henicosa-1(21),2,4(9),5,7,17,19-heptaene-7-carboxylic acid ?
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C28H34N4O2
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