InChI=1/C17H14O4/c18-15(11-16(19)17(20)21)14-8-4-7-13(10-14)9-12-5-2-1-3-6-12/h1-8,10H,9,11H2,(H,20,21)/p-1/fC17H13O4/q-1 FF39AB092FA66299