2-Butenedioic acid, 2-((3-(4,7-dihydro-7-oxo-1H-1,2,3-triazolo(4,5-d)pyrimidin-5-yl)-4-propoxyphenyl)amino)-, dimethyl ester, (Z), compd. with 2,2',2''-nitrilotris(ethanol) EM5975000