InChI=1/C11H15NO4/c1-7-5-8(9(6-13)15-7)12-10(14)16-11(2,3)4/h5-6H,1-4H3,(H,12,14 carbamic acid, (2-formyl-5-methyl-3-furanyl)-, 1,1-dimethylethyl ester tert-butyl (2-formyl-5-methyl-3-furyl)carbamate