AIDS-071375 AIDS071375 Dimethylsulfamic acid, 5-tert-butyl-4-{4-hydroxy-2-oxo-6-phenethyl-6-[4-(2-piperazin-1-yl)-ethoxy)phenyl]-5,6-dihydro-2H-pyran-3-ylsulfanyl}, 2-methylphenyl ester