AIDS-071343 AIDS071343 N-(9-Amino-3,6-dioxa-7,7-dioxo-1-(1,1,2,2-tetramethyl-1-silapropoxy)-4-((1,1,2,2-tetramethyl-1-silapropoxy)methyl)-7-thiaspiro[4.4]non-8-en-2-yl)(phenylamino)formamide TSAO deriv.