5-Methyl-1H-hexahydropyrrolo[3,4-B]pyrrole132414-59-6100 % similar Octahydro-6-(phenylmethyl)-1H-pyrrolo[3,4-B]pyridine128740-14-732 % similar 1-(1-Methyl-4-piperidinyl)piperazine23995-88-230 % similar Decahydroquinoline2051-28-730 % similar