InChI=1S/C22H28O5/c1-11-13-7-14-19(26)21-6-4-5-20(3,10-23)15(21)9-17(27-12(2)24)22(14,18(11)25)16(21)8-13/h10,13-18,25H,1,4-9H2,2-3H3