Synonyms: 1H-Dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacycloheneicosine,cyclic peptide deriv.; Antibiotic L 671329; L 671329; Stereoisomer of N2-(10,12-dimethyl-1-oxotetradecyl)-4,5-dihydroxy-L-ornithyl-L-threonyl-4-hydroxy-L-prolyl-4-hydroxy-4-(4-hydroxyphenyl)-L-threonyl-3-hydroxy-L-glutaminyl-3-hydroxy-4-methyl-L-prolinecyclic (6®1)-peptide