InChI=1S/C19H26O5/c1-12(5-8-17-19(2,3)24-17)4-6-13-10-14(7-9-18(22)23)16(21)11-15(13)20/h4,10-11,17,20-21H,5-9H2,1-3H3,(H,22,23)