AIDS-044074 AIDS044074 Carbamic acid, (2,4-dimethoxyphenyl)-, 4-methyl-2-oxo-2H-1-benzopyran-7-yl ester, mixt. with 4-methyl-7-oxo-7H-1-benzopyran-2-yl (2,4-dimethoxyphenyl)carbamate NSC602335