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system
Provide the molecular formula for the IUPAC named substance 10,18-dimethyl-9,20-diazapentacyclo[9.7.2.02,7.08,20.015,19]icosa-1(18),2,4,6,8,10,15(19),16-octaene;10,17-dimethyl-12,12-diphenyl-13-oxa-9,19-diaza-12-silapentacyclo[9.6.2.02,7.08,19.014,18]nonadeca-1(17),2,4,6,8,10,14(18),15-octaene;10,17-dimethyl-12-thia-9,19-diazapentacyclo[9.6.2.02,7.08,19.014,18]nonadeca-1(17),2,4,6,8,10,14(18),15-octaene;10,17-dimethyl-13-thia-9,19-diazapentacyclo[9.6.2.02,7.08,19.014,18]nonadeca-1(17),2,4,6,8,10,14(18),15-octaene;10,13,13,17-tetramethyl-12-oxa-9,19-diaza-13-silapentacyclo[9.6.2.02,7.08,19.014,18]nonadeca-1(17),2,4,6,8,10,14(18),15-octaene .
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C104H86N10O2S2Si2
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