[ClH:1].[CH3:2][C:3]([CH2:11][CH2:12][CH:13]=[C:14]([CH3:26])[CH2:15][CH2:16][CH:17]=[C:18]([CH3:25])[CH2:19][CH2:20][CH:21]=[C:22]([CH3:24])[CH3:23])=[CH:4][C:5]([NH:7][CH2:8][CH2:9][NH2:10])=[O:6]>CO>[ClH:1].[CH3:2][C:3]([CH2:11][CH2:12][CH:13]=[C:14]([CH3:26])[CH2:15][CH2:16][CH:17]=[C:18]([CH3:25])[CH2:19][CH2:20][CH:21]=[C:22]([CH3:24])[CH3:23])=[CH:4][C:5]([NH:7][CH2:8][CH2:9][NH2:10])=[O:6]Hydrogen chloride gas was passed through a methanol solution of N-(3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraenoyl)-ethylenediamine obtained in Example 9. The solvent was distilled off to afford 6.1 g of the title compound as a brown oil.
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