149204-42-2 Kahalalide F Valine, N-(5-methyl-1-oxohexyl)valylthreonylvalylvalyl-D-prolyl-L-ornithyl-D-alloisoleucylthreonyl-D-alloisoleucylvalyl-L-phenylalanyl-(Z)-2,3-didehydro-2-aminobutanoyl-, rho-lactone