[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4](/[CH:8]=[CH:9]/[N+:10]([O-:12])=[O:11])[C:3]=1[O:13]COC.Cl>CO.O1CCOCC1>[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4](/[CH:8]=[CH:9]/[N+:10]([O-:12])=[O:11])[C:3]=1[OH:13]To a suspension of Example 383B in methanol (15 mL) was added 4 N HCl in dioxane (1 mL). The mixture was stirred for 4 hours, concentrated, and diluted with water. The precipitates were collected to afford the titled compound.
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