5-(4-Chlorophenyl)-4-imino-7-(4-methylphenyl)-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-3-amine 5-(4-Chlorophenyl)-4-imino-7-(4-methylphenyl)-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-3-ylamine AIDS-144522 AIDS144522 NSC667384