(g) \text{MeO} \text{OMe}\xrightarrow[2. \text{O}\text{OMe}]{1. \text{MeO}^-\text{Na}^+, \text{MeOH}}\xrightarrow{3. \text{HCl}, \text{H}_2\text{O}, \Delta} \text{HO} \text{OH}\text{HO} \text{OH} \text{HO} \text{OH} (h) \text{O} \xrightarrow{\text{NaOD}, \text{D}_2\text{O}} \text{D} \text{O} \text{D} \text{CD}_3 \text{D} \text{D} \text{D} \text{CD}_3 \text{D} \text{D} \text{CH}_3 \text{D} \text{D} \text{CD}_3