Synonyms: CHALCOMYCIN;NSC150439;AC1NTK2D;AC1Q6O3T;20283-48-1;NSC-150439;(2E,10E)-5-hydroxy-15-[(5-hydroxy-3,4-dimethoxy-6-methyloxan-2-yl)oxymethyl]-8-(3-hydroxy-4-methoxy-6-methyloxan-2-yl)oxy-5,7,9,14-tetramethyl-13,17-dioxabicyclo[14.1.0]heptadeca-2,10-diene-4,12-dione;12-hydroxy-2-{[(5-hydroxy-3,4-dimethoxy-6-methyltetrahydro-2h-pyran-2-yl)oxy]methyl}-9-[(3-hydroxy-4-methoxy-6-methyltetrahydro-2h-pyran-2-yl)oxy]-3,8,10,12-tetramethyl-4,17-dioxabicyclo[14.1.0]heptadeca-6,14-diene-5,13-dione(non-preferred name);4,14-diene-5,13-dione, 2-[[(6-deoxy-2,3-di-O-methyl-.beta.-D-allopyranosyl)oxy]methyl]-9-[(4,6-dideoxy-3-O-methyl-.beta.-D-xylo-hexopyranosyl)oxy]-12-hydroxy-3,8,10,12-tetramethyl-