4-[1''-(pyrrolidino)methyl-5''-methyl-3''-isatinimino]-N-(5',6'-dimethoxy-4'-pyrimidinyl) benzene sulphonamide 4-[1-(pyrrolidino)methyl-5-methyl-3-isatinimino]-N-(5',6'-dimethoxy-4'-pyrimidinyl) benzene sulphonamide AIDS-062155 AIDS062155 YP-19