Synonyms: L-Proline,(4R,5R)-4,5-dihydroxy-N2-(12-methyl-1-oxotetradecyl)-L-ornithyl-L-threonyl-trans-4-hydroxy-L-prolyl-4-(4-hydroxyphenyl)-L-threonyl-L-seryl-3-hydroxy-4-methyl-,cyclic (6®1)-peptide, (2a,3b,4b)-; 1H-Dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacycloheneicosine,cyclic peptide deriv.; L-Proline,(4R,5R)-4,5-dihydroxy-N2-(12-methyl-1-oxotetradecyl)-L-ornithyl-L-threonyl-(4R)-4-hydroxy-L-prolyl-4-(4-hydroxyphenyl)-L-threonyl-L-seryl-3-hydroxy-4-methyl-,(6®1)-lactam, (3S,4S)-