178182-49-5 AIDS-153701 AIDS153701 NSC702208 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