2H-Naphtho[2,3-b][1,4]dioxepin-2-one, 7-(3,4-dihydro-5,6,8-trihydroxy-2,3-dimethyl-4-oxo-2H-naphtho[2,3-b]pyran-9-yl)-3,4-dihydro-8,10,11-trihydroxy-3,4-dimethyl- AIDS-109548 AIDS109548