4H-Furo[3,2-d]-1,3,2-dioxaphosphorin-7-ol, 6-[6-amino-8-[(4-bromophenyl)thio]-9H-purin-9-yl]tetrahydro-2-hydroxy-, 2-oxide, (4aR,6R,7R,7aS)- 8-p-Bromophenylthio-cAMP AIDS-212163 AIDS212163