You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(2,5-dimethylphenyl)-2-oxo-1-azatricyclo[6.3.1.04,12]dodeca-4,6,8(12)-triene-6-sulfonamide into its molecular formula.
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C19H20N2O3S
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