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- H OH H xs CrO₂ H₂O* acetone Modify the structure of the starting material to draw the major organic product. Use the single bond tool to interconvert between double and single bonds. Edit Drawing ? OHOH H xs CrO3 H₂O acetone Modify the structure of the starting material to draw the major organic product. Use the single bond tool to interconvert between double and single bonds. Edit Drawing ? OHDraw the starting material that required the reaction below.