2-methyl-4-oxo-4H-chromene-3-carbaldehyde 4H-1-benzopyran-3-carboxaldehyde, 2-methyl-4-oxo- InChI=1/C11H8O3/c1-7-9(6-12)11(13)8-4-2-3-5-10(8)14-7/h2-6H,1H