You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 9-[8-(9-oxa-14-azapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3,5,7,11,15,17,19-nonaen-14-yl)dibenzoselenophen-2-yl]carbazole-3-carbonitrile using the IUPAC nomenclature.
user
C43H23N3OSe
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