You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 7-[[5-[(2,5-dichlorophenoxy)methyl]-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanylmethyl]-[1,3]thiazolo[3,2-a]pyrimidin-5-one .
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C19H15Cl2N5O2S2
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