2,3,9,10-Tetramethoxy-5,6,12,12a-tetrahydroindolo[2,1-a]isoquinoline AIDS-135566 AIDS135566 NSC635459 {5,6,12,12a-Tetrahydro-2,3,9,10-tetramethoxyindolo[2,} 1-a\]isoquinoline