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system
Provide the molecular formula for the IUPAC named substance dibenzyl 6,15-bis[(5,6-difluoro-1,3-dioxoinden-2-ylidene)methyl]-10-oxa-3,7,14,18-tetrathiapentacyclo[10.6.0.02,9.04,8.013,17]octadeca-1(12),2(9),4(8),5,13(17),15-hexaene-11,11-dicarboxylate .
user
C49H22F4O9S4
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