2-[N-(cyanomethyl)anilino]-5-methoxybenzoic acid

3-hydroxy-7-methoxy-4-phenyl-4H-furo(3,2-b)indole-2-carboxylic acid methyl ester

5-methoxy-3-(2-methoxy-2-oxoethoxy)-1-phenyl-1H-indole-2-carboxylic acid methyl ester

5-methoxy-2-((2-methoxy-2-oxoethyl)phenylamino)benzoic acid methyl ester