12,13-Dihydro-12,13-epoxyleucomycin V 3-acetate 4b-(3-methylbutanoate) 9-propanoate 35775-85-0 9-Propionylmaridomycin II Leucomycin V, 12,13-dihydro-12,13-epoxy-, 3-acetate 4b-(3-methylbutanoate) 9-propanoate Propionylmaridomycin II