InChI=1S/C17H20O10/c18-10(7-9(15(22)23)6-8-4-2-1-3-5-8)26-17-13(21)11(19)12(20)14(27-17)16(24)25/h1-5,9,11-14,17,19-21H,6-7H2,(H,22,23)(H,24,25)