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What is the molecular formula of the molecule 2,4-diphenyl-6-(4-spiro[9,13,20-trioxapentacyclo[10.8.0.02,10.03,8.014,19]icosa-1(12),2(10),3,5,7,14,16,18-octaene-11,9'-fluorene]-3'-ylphenyl)-1,3,5-triazine ?
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C50H29N3O3
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