6H-Pyridazino(1,2-a)(1,2)diazepine-1-carboxylic acid, 9-((1-carboxy-3-phenylpropyl)amino)octahydro-6,10-dioxo-, (1S-(1alpha,9alpha(R*)))- 88851-65-4 Ro 31-2201 Ro-31-2201