1-butyl-1H-pyrrole-2,5-dione 1H-pyrrole-2,5-dione, 1-butyl- 2973-09-3 InChI=1/C8H11NO2/c1-2-3-6-9-7(10)4-5-8(9)11/h4-5H,2-3,6H2,1H