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What is the molecular formula of the molecule identified by (3E)-1-ethoxy-3-[3-ethyl-4-(1,5,7,10,11-pentazatricyclo[7.3.0.02,6]dodeca-2(6),3,7,9,11-pentaen-12-yl)cyclopentylidene]propan-2-one ?
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C19H23N5O2
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