2-[(2S,3R,5R)-5-(2-Amino-6-oxo-1,6-dihydro-purin-9-yl)-2-hydroxymethyl-tetrahydro-furan-3-yl]-N-[(2R,3S,5R)-5-(2-amino-6-oxo-1,6-dihydro-purin-9-yl)-3-hydroxy-tetrahydro-furan-2-ylmethyl]-acetamide AIDS-164211 AIDS164211 T*T