(1R-trans)-2,3,5,7a-Tetrahydro-1-((4-nitrobenzoyl)oxy)-1H-pyrrolizine-7-methanol 4-nitrobenzoate (ester) 1H-Pyrrolizine-7-methanol, 2,3,5,7a-tetrahydro-1-((4-nitrobenzoyl)oxy)-, 4-nitrobenzoate (ester), (1R-trans)- 52031-08-0 Retronecine 7,9-bis(p-nitrobenzoate)