2,3,8-Trimethoxy-6-methyl-11H-6.lambda.~5~-indeno[1,2-c]isoquinolin-9-yl methanesulfonate AIDS-129638 AIDS129638 NSC357681 {11H-Indeno[1,2-c]isoquinolinium,} 2,3, {8-trimethoxy-6-methyl-9-[(methylsulfonyl)oxy]-,} chloride