(2-Chloroethoxy)-N-(2-oxo-5-phenylthio(1H,3H-benzo[d]1,3,2-diazaphospholin-2-yl))carboxamide 2,3-Dihydro-5-thiophenoxy-1H-1,3,2-benzodiazaphosphole 2-oxide derivative AIDS-105486 AIDS105486