5-[(azidoacetyl)oxy]-2-[4-[(azidoacetyl)oxy]-3-(5,7-bis[(azidoacetyl)oxy]-2-{4-[(azidoacetyl)oxy]phenyl}-4-oxo-4H-chromen-6-yl)phenyl]-4-oxo-4H-chromen-7-yl azidoacetate AIDS-155597 AIDS155597 Succedaneaflavonone hexacetate