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What is the molecular formula of the compound with this IUPAC name 3'-naphthalen-2-ylspiro[1-azapentacyclo[10.7.1.02,7.08,20.014,19]icosa-2,4,6,8(20),9,11,14,16,18-nonaene-13,9'-xanthene] ?
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C41H25NO
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