b. C. O d. e. H f. HO -ОН -OH Na₂Cr₂O7 H₂SO4, H₂O -OH OH xs CrO3 H3O+ acetone 1) DMSO, (COCI)2, ? 2) Et3N PCC CH₂Cl₂ H ? ? ? DMP CH₂Cl₂ ?

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A: answer attached below Explanation:Step 1: Step 2: Step 3: Step 4:

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