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