epsilon-pyrromycinone | (1R)-2-Ethyl-1,2,3,4,6,11-hexahydro-2α,4α,5,7,10-pentahydroxy-6,11-dioxo-1-naphthacenecarboxylic acid methyl ester |
(1R)-2-Ethyl-2α,4α,5,7,10-pentahydroxy-6,11-dioxo-1,2,3,4,6,11-hexahydronaphthacene-1β-carboxylic acid methyl ester | (1R,2R,4S)-2-Ethyl-1,2,3,4,6,11-hexahydro-2,4,5,7,10-pentahydroxy-6,11-dioxo-1-naphthacenecarboxylic acid methyl ester |