2,3,8,9-Tetramethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine - 1,2,8,9-tetramethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine (1:1) AIDS-017351 AIDS017351 NSC624459