Carboxylate Ion of Nystatin

Chemical Name: (3R,5R,7R,10R,11R)-12-((4S,5R,6S)-6-((2R,3E,5E,7E,9E,13E,15E,17S,18R,19S,20S)-2-(((2S,3R,4R,5R,6S)-4-ammonio-3,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-18,20-dihydroxy-17,19-dimethylhenicosa-3,5,7,9,13,15-hexaen-1-yl)-5-carboxy-2,4-dihydroxytetrahydro-2H-pyran-2-yl)-3,5,7,10,11-pentahydroxydodecanoate