You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 5-N-(2,5-dichlorophenyl)-3-N-(1,1-dioxothiolan-3-yl)-3-N-methyl-1,2,4-triazine-3,5-diamine into molecular formula.
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C14H15Cl2N5O2S
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