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What is the molecular formula of the molecule identified by 14-[(2-bromophenyl)methyl]-12-oxa-14-azapentacyclo[11.7.1.02,11.04,9.015,20]henicosa-2(11),4,6,8,15,17,19-heptaene-3,10-dione ?
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C26H18BrNO3
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