InChI=1S/C20H26O6/c1-11-12(2)18(19(22)23)26-20(13(11)3)25-15-6-4-5-14(9-15)10-16-7-8-17(21)24-16/h4-6,9,11-13,16,18,20H,7-8,10H2,1-3H3,(H,22,23)/t11-,12-,13+,16?,18-,20+/m0/s1