C([O:4][C:5]1[CH:10]=[CH:9][C:8]([CH:11]=[CH:12][C:13]([NH:15][C@H:16]([C:26]([O:28]C)=[O:27])[CH2:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)=[O:14])=[CH:7][CH:6]=1)(=O)C.[OH-].[Na+]>CO>[OH:4][C:5]1[CH:10]=[CH:9][C:8]([CH:11]=[CH:12][C:13]([NH:15][C@H:16]([C:26]([OH:28])=[O:27])[CH2:17][C:18]2[CH:19]=[CH:20][C:21]([O:24][CH3:25])=[CH:22][CH:23]=2)=[O:14])=[CH:7][CH:6]=1The same procedures as in Example 90 were carried out from the compound obtained in Example 37 (2.5 g), 1 mol/L of an aqueous sodium hydroxide solution (19 mL), and methanol (190 mL), to give the captioned compound (1.2 g, 57%) as an amorphous solid product.
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