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 4-[2-chloro-6-[[(3S,5R)-4-(2-methoxyethyl)-3,5-dimethylpiperazin-1-yl]methyl]thieno[3,2-d]pyrimidin-4-yl]morpholine into molecular formula.
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C20H30ClN5O2S
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