2(1H)-quinolinone, 4-hydroxy-3-(3-oxobutyl)- 4-hydroxy-3-(3-oxobutyl)quinolin-2(1H)-one InChI=1/C13H13NO3/c1-8(15)6-7-10-12(16)9-4-2-3-5-11(9)14-13(10)17/h2-5H,6-7H2,1H3,(H2,14,16,17