5-(4-Hydroxybenzylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione

2,2-Dimethyl-5-(4-hydroxybenzylidene)-1,3-dioxane-4,6-dione

5-[(4-Hydroxyphenyl)methylene]-2,2-dimethyl-1,3-dioxane-4,6-dione

Malonic acid, (p-hydroxybenzylidene)-, cyclic isopropylidene ester