Step 1: add curved arrows. Step 2: complete the structure and add curved arrows. Select Draw Rings More Erase Select Draw Rings More Erase H o c H 0 H H - ! H 0 G 2 a Step 3: complete the structure and add curved arrows. Step 4: complete the structure to draw the final product. Select Draw Rings More Erase Select Draw Rings More Erase H O / H O H :O: H H : HO: 0 C