2,2-dimethyl-5-prop-1-en-2-ylfuran-3-one

5-(3-hydroxyprop-1-en-2-yl)-2,2-dimethylfuran-3-one

2-hydroxy-2-methylundec-4-en-3-one

3-hydroxy-3-methyl-2-oxobutanoic acid

1-(6,6-dimethyl-1,4,7-trioxaspiro[4.4]nonan-8-yl)ethanone