InChI=1/C13H16O4/c1-13(2,3)17-12(15)9-16-11-6-4-10(8-14)5-7-11/h4-8H,9H2,1-3H acetic acid, (4-formylphenoxy)-, 1,1-dimethylethyl ester tert-butyl (4-formylphenoxy)acetate