5-(tert-Butyl)-4-{4-hydroxy-6-[4-(2-hydroxyethoxy)phenyl]-6-[2-(4-hydroxy-3-methoxyphenyl)ethyl]-2-oxo(5,6-dihydro-2H-pyran-3-ylthio)}-2-methylphenyl (ethylamino)sulfonate AIDS-071383 AIDS071383