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What is the molecular formula of the compound with this IUPAC name 6-[(12-oxospiro[1,3,5,11-tetrazatricyclo[7.4.0.02,7]trideca-2,4,6,8-tetraene-13,1'-cyclohexane]-4-yl)amino]pyridine-3-sulfonamide ?
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C19H21N7O3S
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