InChI=1S/C16H24O11/c17-8(4-1-2-6-9(18)19)5-3-7-10(20)26-16-13(23)11(21)12(22)14(27-16)15(24)25/h1,4,8,11-14,16-17,21-23H,2-3,5-7H2,(H,18,19)(H,24,25)/b4-1-