Synonyms: CyanoginosinLA, 1-(2,3-didehydroalanine)-3-L-arginine-5-L-arginine-; Microcystin RR,1-(2,3-didehydroalanine)- (9CI); 1,4,7,10,14,17,21-Heptaazacyclopentacosane,cyclic peptide deriv.; 7-Desmethylmicrocystin RR; Microcystin E; MicrocystinLA, 1-(2,3-didehydroalanine)-3-L-arginine-5-L-arginine-