InChI=1/C11H9NO4/c1-15-11(14)12-9-6-7-4-2-3-5-8(7)10(13)16-9/h2-6H,1H3,(H,12,14 carbamic acid, (1-oxo-1H-2-benzopyran-3-yl)-, methyl ester methyl (1-oxo-1H-isochromen-3-yl)carbamate