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system
Provide the molecular formula for the IUPAC named substance 7-[4-(4,6-diphenylpyrimidin-2-yl)phenyl]-9,14-diphenyl-9,15-diazapentacyclo[11.8.0.02,10.03,8.016,21]henicosa-1(13),2(10),3(8),4,6,11,14,16,18,20-decaene .
user
C53H34N4
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