InChI=1S/C20H26O4/c1-12-9-20(11-21)10-13(12)5-6-14(20)18(2)7-4-8-19(3)15(18)16(22)24-17(19)23/h11,13-15H,1,4-10H2,2-3H3/t13?,14-,15-,18-,19+,20+/m0/s1