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system
Provide the molecular formula for the IUPAC named substance 17,21,21-trimethyl-14-[12-(17,21,21-trimethyl-10-selena-14-azapentacyclo[11.8.0.03,11.04,9.015,20]henicosa-1(13),2,4,6,8,11,15(20),16,18-nonaen-14-yl)chrysen-6-yl]-10-selena-14-azapentacyclo[11.8.0.03,11.04,9.015,20]henicosa-1(13),2,4,6,8,11,15(20),16,18-nonaene .
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C62H46N2Se2
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