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