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What is the molecular formula of the compound with this IUPAC name N,N-dimethyl-2-(13-oxa-3,5-diazatetracyclo[9.7.0.02,7.012,17]octadeca-1,4,6,9,11,15,17-heptaen-4-ylmethoxy)ethanamine ?
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C20H23N3O2
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