128083-59-0 L-Prolinamide, N-((hexahydro-2,6-dioxo-1-pentyl-4-pyrimidinyl)carbonyl)-L-histidyl-, hydrate N-((Hexahydro-2,6-dioxo-1-pentyl-4-pyrimidinyl)carbonyl)-L-histidyl-L-prolinamide hydrate