(1R-trans)-7-(((4-Chlorobenzoyl)oxy)methyl)-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl 4-chlorobenzoate 39818-11-6 Benzoic acid, 4-chloro-, 7-(((4-chlorobenzoyl)oxy)methyl)-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl ester, (1R-trans)- Retronecine-7:9-(p-chlorobenzoate)