for the following products
5-Hydroxyhexahydrocyclopenta[c]pyrrole-2(1H)-carboxylic acidtert-butylester | Cyclopenta[c]pyrrole-2(1H)-carboxylic acid, hexahydro-5-hydroxy-, 1,1-dimethylethyl ester and tert-Butyl 5-hydroxyhexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate
