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system
Provide the molecular formula for the IUPAC named substance 2,2-dimethyl-3-(16-oxo-11-thia-13,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2,4,6,12(17),13-hexaen-15-yl)propanoic acid .
user
C19H18N2O3S
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