4H-1-Benzopyran-4-one, 5,7-dihydroxy-2-(4-hydroxyphenyl)-3-[[2,3,4-tri-O-acetyl-6-O-[(2E)-3-[4-(acetyloxy)phenyl]-1-oxo-2-propenyl]-b-L-glucopyranosyl]oxy]- AIDS-189949 AIDS189949