1,3-Bis-(2-ethoxycarbonylchromon-5-yloxy)-2-(lysyloxy)propane 110816-78-9 KY 556 L-Lysine, 2-((2-(ethoxycarbonyl)-4-oxo-4H-1-benzopyran-5-yl)oxy)-1-(((2-(ethoxycarbonyl)-4-oxo-4H-1-benzopyran-5-yl)oxy)methyl)ethyl ester, dihydrochloride N 556 N-556