You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[[4-[(7-ethyl-2,6-dioxopurin-3-yl)methyl]phenyl]methyl]-4-(1-methylpiperidin-4-yl)oxybenzenesulfonamide into molecular formula.
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C27H32N6O5S
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