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 6-[(2S)-2-[5-[(2-chlorophenyl)methyl]-1,3-oxazol-2-yl]pyrrolidine-1-carbonyl]-5-methyl-3H-thieno[2,3-d]pyrimidin-4-one into molecular formula.
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C22H19ClN4O3S
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