InChI=1S/C21H27FO7/c1-18-4-3-10(24)5-13(18)14(25)6-12-11-7-15(26)21(29,17(28)9-23)19(11,2)8-16(27)20(12,18)22/h3-5,11-12,14-16,23,25-27,29H,6-9H2,1-2H3/t11-,12-,14+,15+,16-,18-,19-,20-,21-/m0/s1