(Ser(1)-admadda(5))microsystin-LR 141634-76-6 Cyanoginosin LA, 2-D-serine-5-L-arginine-6-((2S,4E,6E,8S,9S)-9-(acetyloxy)-4,5,6,7-tetradehydro-2,6,8-trimethyl-10-phenyl-L-3-aminodecanoic acid)- S-Adnadda-M-LR