1 COC Cocaine 1.000 2 BCG 3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylic acid 0.870 3 OBE 3-(3-hydroxy-benzoyloxy)-8-methyl-8-aza-bicyclo[3.2.1]octane-2-carboxylic acid 0.833 4 RBE 3-(benzoyloxy)-8-aza-bicyclo[3.2.1]octane-2-carboxylic acid 0.826 5 V63 [(1r,5s)-8-azabicyclo[3.2.1]octan-3-yl] benzoate 0.773