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