141985-38-8 Glycine, N-(1,2,3,4,5,8-hexahydro-1,3-dimethyl-6-nitro-2,4,5-trioxopyrido(2,3-d)pyrimidin-7-yl)- N-(1,3-Dimethyl-2,4,5-trioxo-6-nitro-1,2,3,4,5,8-hexahydropyrido(2,3-d)pyrimidinyl-7)glycine