1-((3-Phenyl-DL-alanyl)amino)cyclopentanecarboxylic acid monohydrochloride CB 1677 Cyclopentanecarboxylic acid, 1-((3-phenyl-DL-alanyl)amino)-, monohydrochloride DL-Phenylalanyl-1-aminocyclopentanecarboxylic acid hydrochloride GY3150000