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Figure 5 The suggested reaction scheme of the title compound. (II): 1-(2-Hydroxyethyl)imino-2-(2-hydroxyethyl)-3-hydroxy −3-(2′-(2-hydroxyethyl)-2′,3′-dihydro-1′H-benzo[c]pyrrol- 1′-one-3-yl)-2,3-dihydro-1H-benzo[c]pyrrole (III): 2-(2-hydroxyethyl)-2,3-dihydro-1H-benzo[c] pyrrol-1-one (Urban et al., 1997a) |