2-furanylmethyl 4-[(1-butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxopyridin-3-yl)azo]benzoate

4-[[(1-Butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxopyridin)-3-yl]azo]benzoic acid 2-furanylmethyl ester