Synonyms: NSC702208;AC1NUU8A;178182-49-5;methyl 3,4',9',10-tetrahydroxy-3'-(5-hydroxy-4-methoxy-6-methyloxan-2-yl)oxy-7'-methoxy-5',8',9-trioxospiro[3,4-dihydropyrano[4,3-g]chromene-2,2'-3H-benzo[f][1]benzofuran]-7-carboxylate;methyl 3-[(2,6-dideoxy-3-O-methylhexopyranosyl)oxy]-3',4,9,10'-tetrahydroxy-7-methoxy-5,8,9'-trioxo-4',5,8,9'-tetrahydro-3H,3'H-spiro[naphtho[2,3-b]furan-2,2'-pyrano[4,3-g]chromene]-7'-carboxylate