InChI=1S/C20H28O5/c1-12-13-4-5-14-19(7-3-6-18(2,10-22)15(19)9-21)11-25-17(24)20(14,8-13)16(12)23/h13-15,21-22H,1,3-11H2,2H3/t13-,14+,15-,18+,19-,20+/m1/s1