Synonyms: (1R)-6,11-Dioxo-2-ethyl-1,2,3,4,6,11-hexahydro-2α,5,7-trihydroxy-1β-naphthacenecarboxylic acid methyl ester;(1R,2R)-2-Ethyl-1,2,3,4,6,11-hexahydro-2,5,7-trihydroxy-6,11-dioxo-1-naphthacenecarboxylic acid methyl ester;7-Deoxyaklavinone;Antibiotic MA-144C1;Galirubinone D;MA-144C1