methyl (1RS,2SR)-2-ethyl-1,2,3,4,5,12-hexahydro-2,11-dihydroxy-7-methoxy-5,12-dioxo-1-naphthacenecarboxylate

methyl (1RS,2RS)-2-ethyl-1,2,3,4,5,12-hexahydro-2,11-dihydroxy-7-methoxy-5,12-dioxo-1-naphthacenecarboxylate

methyl (1RS,2SR)-2-ethyl-1,2,3,4,6,11-hexahydro-2,5,12-trihydroxy-7-methoxy-6,11-dioxo-1-naphthacenecarboxylate

methyl (1RS,2RS)-2-ethyl-1,2,3,4,6,11-hexahydro-2,5,12-trihydroxy-7-methoxy-6,11-dioxo-1-naphthacenecarboxylate

(+/-)-7,10-diepi-ε-rhodomycinone