[CH2:1]([NH2:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].[C:20]([OH:28])(=[O:27])[C:21]([CH2:23][C:24](O)=[O:25])=[CH2:22].C(CN)O>>[CH2:1]([N:19]1[C:24](=[O:25])[CH2:23][CH:21]([C:20]([OH:28])=[O:27])[CH2:22]1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]265 g of oleylamine, 130 g of itaconic acid and 61 g of monoethanolamine were used to obtain 440 g of N-oleyl-5-oxopyrrolidine-3-carboxylic acid monoethanolammonium salt with
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