Synonyms: Dianemycin(8CI); 6-Nonenoic acid,8-[9-hydroxy-2,4',8,10'-tetramethyl-2'-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl]-9'-[(tetrahydro-5-methoxy-6-methyl-2H-pyran-2-yl)oxy][2,7'-bi-1,6-dioxaspiro[4.5]dec]-7-yl]-2,4,6-trimethyl-5-oxo-,[2S-[2a[2'S*,4'R*,5'R*,7'S*[2R*,5S*,7S*(2R*,4S*,6E,8R*),8S*,9R*],9'R*(2R*,5R*,6S*),10'S*],3b,5b,6b]]-; NSC 138320; Stereoisomer of8-[9-hydroxy-2,4',8,10'-tetramethyl-2'-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl]-9'-[(tetrahydro-5-methoxy-6-methyl-2H-pyran-2-yl)oxy][2,7'-bi-1,6-dioxaspiro[4.5]dec]-7-yl]-2,4,6-trimethyl-5-oxo-6-nonenoicacid