nybomycin

8-(Hydroxymethyl)-6,11-dimethyl-4H-oxazolo[5,4,3-ij]pyrido[3,2-g]quinoline-4,10(11H)-dione

8,9-Dihydro-4-(hydroxymethyl)-6,9-dimethyl-2,8-dioxopyrido(3,2-G)quinoline-1(2H)-carboxaldehyde