2-[({(1E)-[21-(acetyloxy)-5,6,9,17,19-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)naphtho[2,1-b]furan-8-yl]methylene}amino)oxy]-3-methylbutanoic acid 38128-94-8 AIDS-160081 AIDS160081 NSC143470