.epsilon.-Pyrromycinone 1-Naphthacenecarboxylic acid, 2-ethyl-1,2,3,4,6,11-hexahydro-2,4,5,7,10-pentahydroxy-6,11-dioxo-, methyl ester, (1R,2R,4S)- 1-Naphthacenecarboxylic acid, 2-ethyl-1,2,3,4,6,11-hexahydro-2,4,5,7,10-pentahydroxy-6,11-dioxo-, methyl ester, [1R-(1.alpha.,2.beta.,4.beta.)]- 21288-61-9 Antibiotic MA 144D2 Eta-Pyrromycinon NSC114778 PYRROMYCINONE, EPSILON