You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 8-(3,4-dimethylphenyl)-4,8,12-triazatricyclo[7.4.0.02,7]trideca-1(13),2(7),3,5,9-pentaene into its molecular formula.
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C18H17N3
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