Synonyms: 1,7-Dioxa-4,10-diazacyclododecane-2,5,8,11-tetrone,3,6,9,12-tetraisopropyl-4,10-dimethyl-, stereoisomer (8CI); Cyclic(D-a-hydroxyisovaleryl-N-methyl-D-valyl-L-a-hydroxyisovaleryl-N-methyl-D-valyl);1,7-Dioxa-4,10-diazacyclododecane, cyclic peptide deriv.; Valine,N-(2-hydroxy-3-methylbutyryl)-N-methyl-, bimol. cyclic ester, stereoisomer