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system
Provide the molecular formula for the IUPAC named substance 2-[2-ethoxy-4-[(1R,2R,9R,10R,11S,12S,16R)-14-(4-nitrophenyl)-6,13,15-trioxo-3,7-dithia-5,14-diazapentacyclo[9.5.1.02,10.04,8.012,16]heptadec-4(8)-en-9-yl]phenoxy]-N-naphthalen-1-ylacetamide .
user
C39H32N4O8S2
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