8-hydroxy-3,3-dimethyl-10-((2-methylbut-3-yn-2-yl)oxy)-2-methylene-2H-[1,4]dioxino[2,3-c]xanthen-7(3H)-one

3,3-dimethylpent-4-yn-1-ol

9-fluoro-6-methoxy-3,3,12-trimethylpyrano[2,3-c]acridin-7-one

9-fluoro-6-hydroxy-3,3,12-trimethylpyrano[2,3-c]acridin-7-one