Butanoic acid, 2-(((3-(4,7-dihydro-7-oxo-1H-1,2,3-triazolo(4,5-d)pyrimidin-5-yl)-4-propoxyphenyl)amino)methylene)-3-oxo-, ethyl ester, (Z,E), compd. with 2,2',2''-nitrilotris(ethanol) EK7786675