2H-pyrano[2,3-e][1,2]benzisoxazol-2-one, 4,9-dimethyl- 4,9-dimethyl-2H-chromeno[8,7-d]isoxazol-2-one InChI=1/C12H9NO3/c1-6-5-10(14)15-12-8(6)3-4-9-11(12)7(2)13-16-9/h3-5H,1-2H