1-Cyclopentene-1-carboxylic acid, 2-((3-(4,7-dihydro-7-oxo-1H-1,2,3-triazolo(4,5-d)pyrimidin-5-yl)-4-propoxyphenyl)amino)-, ethyl ester, compd. with 2,2',2''-nitrilotris(ethanol) 2-(5-(2-Ethoxycarbonylcyclopent-1-enylamino)-2-propoxyphenyl)-8-azapurin-6-one triethanolamine GY5976150