5-methoxy-2,2-dimethyl-6-(2-methyl-1-oxo-2-butenyl) -10-propyl-2H,8H-benzo(1,2-b;3,4-b')dipyran-8-one
5-methoxy-2,2-dimethyl-6-(2-methyl-1-oxo-2-butenyl) -10-propyl-2h,8h-benzo(1,2-b;3,4-b')dipyran-8-one