You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2R,3S,4R,5R)-5-[4-amino-3-(2-phenylethylsulfanyl)pyrazolo[3,4-d]pyrimidin-1-yl]-3,4-dihydroxyoxolan-2-yl]methyl sulfamate into its molecular formula.
user
C18H22N6O6S2
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