InChI=1S/C21H29FO6/c1-18-5-3-11(24)7-14(18)15(25)8-13-12-4-6-20(28,17(27)10-23)19(12,2)9-16(26)21(13,18)22/h7,12-13,15-16,23,25-26,28H,3-6,8-10H2,1-2H3/t12-,13-,15?,16-,18-,19-,20-,21-/m0/s1