InChI=1S/C14H14O11/c15-8-9(16)11(13(20)21)25-14(10(8)17)24-5-2-7-6(22-3-23-7)1-4(5)12(18)19/h1-2,8-11,14-17H,3H2,(H,18,19)(H,20,21)