InChI=1/C21H14O6/c22-11-5-3-4-10(8-11)20-16-17(21-14(26-20)9-15(23)27-21)19(25)13-7-2-1-6-12(13)18(16)24/h1-8,14,20-22H,9H2/t14-,20+,21+/m1/s1 F2DF260D3443505E