128056-06-4 L-Prolinamide, N-((hexahydro-1-butyl-2,6-dioxo-4-pyrimidinyl)carbonyl)-L-histidyl-, hydrate N-((Hexahydro-1-butyl-2,6-dioxo-4-pyrimidinyl)carbonyl)-L-histidyl-L-prolinamide hydrate