Synonyms: SporidesmolideI, 4-(4-methyl-L-2-hydroxypentanoic acid)-; Sporidesmolide IV (7CI,8CI);1,10-Dioxa-4,7,13,16-tetraazacyclooctadecane, cyclic peptide deriv.;Cyclo(3-methyl-L-2-hydroxybutanoyl-D-valyl-D-leucyl-4-methyl-L-2-hydroxypentanoyl-L-valyl-N-methyl-L-leucyl);Cyclo(D-valyl-D-leucyl-L-a-hydroxyisocaproyl-L-valyl-N-methyl-L-leucyl-L-a-hydroxyisovaleryl); Cyclo(L-a-hydroxyisocaproyl-L-valyl-N-methyl-L-leucyl-L-a-hydroxyisovaleryl-D-valyl-D-leucyl)