Synonyms: NoboritomycinA; 2-Furancarboxylic acid,5-[9-[7-(2-carboxy-3-hydroxy-4-methylphenyl)-4-hydroxy-1,3,5-trimethyl-2-oxooctyl]-15-hydroxy-3-methoxy-2,4,10,12-tetramethyl-1,6,8-trioxadispiro[4.1.5.3]pentadec-13-en-2-yl]tetrahydro-3-hydroxy-,ethyl ester, [7R-[7a[2R*(2S*,3R*,5R*),3R*,4R*,5S*,15R*],9a(1R*,3S*,4S*,5R*,7S*),10b,12b]]-; Stereoisomer of ethyl 5-[9-[7-(2-carboxy-3-hydroxy-4-methylphenyl)-4-hydroxy-1,3,5-trimethyl-2-oxooctyl]-15-hydroxy-3-methoxy-2,4,10,12-tetramethyl-1,6,8-trioxadispiro[4.1.5.3]pentadec-13-en-2-yl]tetrahydro-3-hydroxy-2-furancarboxylate