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What is the molecular formula of the compound with this IUPAC name (2S)-2-methyl-4-(2-methylphenyl)-4,6,16-triazatetracyclo[7.7.0.02,6.010,15]hexadeca-1(9),10,12,14-tetraene-3,5-dione ?
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C21H19N3O2
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