[ClH:1].[O:2]1[CH2:7][CH2:6][N:5]([N:8]=[CH:9][C:10]2[CH:34]=[CH:33][C:13]([C:14]([NH:16][C:17]3[CH:26]=[C:25]4[C:20]([CH2:21][CH2:22][CH:23]([CH2:27][C:28]([O:30]CC)=[O:29])[CH2:24]4)=[CH:19][CH:18]=3)=[O:15])=[CH:12][CH:11]=2)[CH2:4][CH2:3]1.[OH-].[Na+]>C(O)C>[ClH:1].[O:2]1[CH2:7][CH2:6][N:5]([N:8]=[CH:9][C:10]2[CH:11]=[CH:12][C:13]([C:14]([NH:16][C:17]3[CH:26]=[C:25]4[C:20]([CH2:21][CH2:22][CH:23]([CH2:27][C:28]([OH:30])=[O:29])[CH2:24]4)=[CH:19][CH:18]=3)=[O:15])=[CH:33][CH:34]=2)[CH2:4][CH2:3]1The compound (0.15 g) obtained in Example 1 was suspended in ethanol (10 ml), a 1N aqueous sodium hydroxide solution (1.5 ml) was added, and the mixture was stirred overnight. The solvent was distilled off under reduced pressure, a 3N aqueous hydrochloric acid solution was added, and the formed precipitate was filtered, washed with water, and dried under reduced pressure to obtain the entitled compound (0.09 g).
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