68613-44-5 Card-20(22)-enolide, 3-((4-(2-((4-azido-1-nitrophenyl)amino)ethyl)hexahydro-6-hydroxy-7-methyl-1,4-oxazepin-2-yl)oxy)-5,11,14,19-tetrahydroxy-, (3beta(2R,6R,7S),5beta,11alpha)- N-(Ouabain)-N'-(2-nitro-4-azidophenyl)ethylenediamine Nap-ouabain