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What is the molecular formula of the molecule 1-O'-tert-butyl 5-O-propan-2-yl (3R,4R,5R)-2-(4-ethoxycarbonylphenyl)-2'-oxo-3-phenylspiro[1,2-oxazolidine-4,3'-indole]-1',5-dicarboxylate ?
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C34H36N2O8
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