InChI=1S/C20H28O4/c1-19-8-7-12(21)9-11(19)3-4-13-14-5-6-15(18(23)24)20(14,2)10-16(22)17(13)19/h9,13-17,22H,3-8,10H2,1-2H3,(H,23,24)/t13-,14-,15+,16+,17+,19-,20-/m0/s1