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 3-[4-[(4-amino-5,6-dimethylfuro[2,3-d]pyrimidin-2-yl)methyl]piperazin-1-yl]phenol into molecular formula.
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C19H23N5O2
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