5,5-dibutylfuran-2-one

2,5-dibutylfuran

hydroxy-2 di-n-butyl-5,5 dihydro-2,5 furanne

N-(5-oxo-2H-furan-2-yl)benzamide

ethyl 2,4,4,7-tetramethyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazine-8-carboxylate