You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R,3R,4S,5R)-2-[6-(2,2-diphenylethylamino)-2-[[(3R)-pyrrolidin-3-yl]amino]purin-9-yl]-5-(2-methyltetrazol-5-yl)oxolane-3,4-diol into its molecular formula.
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C29H33N11O3
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