3a,7-Epoxy-3aH-furo(3,2-b)oxocin-3-carboxylic acid, 5-(6-(2,5-dihydro-4-hydroxy-1-methyl-2-oxo-1H-pyrrol-3-yl)-1,3-dimethyl-6-oxo-2,4-hexadienyl)octahydro-2,6,9a-trimethyl-8-oxo-, methyl ester, (2R-(2alpha,3alpha,3aalpha,5alpha(1R*,2E,4E), 6beta,7alpha,9abeta))- 69774-86-3 69831-38-5 Antibiotic BU-2313 A BU-2313 A