9-Methoxy-4-methyl-6-phenyl-3,4-dihydro-2H,6H-1,5,4-benzodioxazocine AIDS-129544 AIDS129544 Methyl 4-methyl-6-phenyl-3,4-dihydro-2H,6H-1,5,4-benzodioxazocin-9-yl ether NSC353845