InChI=1S/C16H18O10/c17-9-10(18)12(14(22)23)25-16(11(9)19)26-15(24)8(13(20)21)6-7-4-2-1-3-5-7/h1-5,8-12,16-19H,6H2,(H,20,21)(H,22,23)