Josamycin 2',9-dipropionate Josamycin 9,2'-dipropionate Josamycin dipropionate Leucomycin V 3-acetate 2',9-dipropanoate 4''-(3-methylbutanoate) Leucomycin V 3-acetate 4''-(3-methylbutanoate)9,2'-dipropionate Leucomycin V, 3-acetate 4B-(3-methylbutanoate) 2A,9-dipropanoate (9CI)