InChI=1S/C16H18O11/c17-9-10(18)12(15(24)25)27-16(11(9)19)26-7-3-1-2-6(4-7)5-8(13(20)21)14(22)23/h1-4,8-12,16-19H,5H2,(H,20,21)(H,22,23)(H,24,25)