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What is the molecular formula of the compound with this IUPAC name 13-ethyl-11-[3-methoxy-5-(piperazine-1-carbonyl)phenyl]-5,7,11,13-tetrazatricyclo[7.4.0.02,6]trideca-1,3,6,8-tetraen-12-one ?
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C23H26N6O3
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