2-(5-Amino-6-oxo-2-phenylpyrimidin-1(6H)-yl)-N-((1RS)-1-(5-tertbutyl-1,3,4-oxadiazol-2-yl)-3-methyl-1-oxobutan-2-yl)acetamide 208848-19-5 Freselestat Freselestat [INN] ONO-6818