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What is the molecular formula of the molecule identified by (2R,3R,4S,5R)-2-[6-amino-2-(cyclopentylamino)purin-9-yl]-5-methyloxolane-3,4-diol;[(2R,3R,4R,5R)-4-benzoyloxy-5-[6-(dibenzoylamino)-2-nitropurin-9-yl]-2-methyloxolan-3-yl] benzoate ?
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C53H50N12O12
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