InChI=1S/C20H32O5/c1-19-8-2-9-20(12-22,13-23)17(19)6-4-15(11-21)16(19)5-3-14-7-10-25-18(14)24/h7,15-17,21-23H,2-6,8-13H2,1H3/t15-,16-,17+,19+/m1/s1