Synonyms: MicrocystinLA, 3-L-alanine-5-L-arginine-; 1,4,7,10,14,17,21-Heptaazacyclopentacosane,cyclic peptide deriv.; Cyanoginosin AR; Cyanoginosin LA,3-L-alanine-5-L-arginine-;Cyclo[2,3-didehydro-N-methylalanyl-D-alanyl-L-alanyl-erythro-3-methyl-D-b-aspartyl-L-arginyl-(2S,3S,4E,6E,8S,9S)-4,5,6,7-tetradehydro-9-methoxy-2,6,8-trimethyl-10-phenyl-3-aminodecanoyl-D-g-glutamyl]