Synonyms: Azinothricin(9CI);13H,22H-Dipyridazino[6,1-f:6',1'-o][1,4,7,10,13,16]oxapentaazacyclononadecine,cyclic peptide deriv.; (+)-Azinothricin; D-Threonine,N-[2-[6-(3-ethyl-1,5-dimethyl-4-oxo-1,5-heptadienyl)tetrahydro-2-hydroxy-5-methyl-2H-pyran-2-yl]-2-hydroxy-1-oxobutyl]-erythro-3-hydroxy-L-leucyl-D-hexahydro-3-pyridazinecarbonyl-N-hydroxy-O-methyl-L-seryl-N-methyl-D-alanyl-L-hexahydro-3-pyridazinecarbonyl-,r-lactone, [2R-[2a,2(S*),5a,6b(1E,3S*,5E)]]-