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What is the molecular formula of the molecule identified by 6-carbazol-9-yl-9-thia-2,11,19-triazapentacyclo[10.7.0.02,10.03,8.013,18]nonadeca-1(12),3(8),4,6,10,13,15,17-octaene ?
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C27H16N4S
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