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Depict structures of the organic starting material as well as product formed for the reduction of vanillin acetate (4-formyl-2-methoxyphenyl acetate C10H10O4) by sodium borodeuteride (NaBD4) reduction. Star(*) all chirality centers. Explain what R/S configuration results at the carbinol (C-OH) position of the product? (Explain what functional groups are reduced by this hydride reagent?)

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