C(Cl)C(C)C.[CH2:6]([N:13]1[C:21]2[C:16](=[CH:17][CH:18]=[C:19]([CH2:22][C:23]([OH:25])=[O:24])[CH:20]=2)[CH:15]=[CH:14]1)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[CH2:6]([N:13]1[C:21]2[C:16](=[CH:17][CH:18]=[C:19]([CH2:22][C:23]([OH:25])=[O:24])[CH:20]=2)[CH:15]=[CH:14]1)[CH:7]([CH3:12])[CH3:8].[CH2:6]([N:13]1[C:21]2[C:16](=[CH:17][CH:18]=[C:19]([CH2:22][C:23]([OH:25])=[O:24])[CH:20]=2)[CH:15]=[CH:14]1)[C:7]1[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=1The titled compound (10 mg) as a white solid was prepared from the compound [4-6] obtained in the process (6) of Example 4 (100 mg) and isobutyl chloride according to the method of the process (7) of Example 4.
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