InChI=1S/C26H28F2O7/c1-13-9-15-16-11-18(27)17-10-14(29)6-7-23(17,2)25(16,28)20(30)12-24(15,3)26(13,22(32)33)35-21(31)19-5-4-8-34-19/h4-8,10,13,15-16,18,20,30H,9,11-12H2,1-3H3,(H,32,33)/t13-,15+,16+,18+,20+,23+,24+,25+,26+/m1/s1