5-Methoxy-2,2-dimethyl-6-<(E)-2-methylbut-2-enoyl>-10-propyl-2H,8H-benzo<1,2-b:3,4-b'>dipyran-8-one

5-Hydroxy-2,2-dimethyl-6-<(E)-2-methylbut-2-enoyl>-10-propyl-2H,8H-benzo<1,2-b:3,4-b'>dipyran-8-one