You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Can you give the molecular formula of the molecule 3-(2-chlorophenyl)-N-(3,4-dimethylphenyl)-5-oxo-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide ?
user
C21H16ClN3O2S
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