InChI=1S/C22H26O5/c1-13-14(2)22(27)20(15(3)21(13)26)18(7-5-4-6-8-19(24)25)16-9-11-17(23)12-10-16/h9-12,18,23H,4-8H2,1-3H3,(H,24,25)/t18-/m0/s1