InChI=1S/C28H42O5/c1-19(9-10-21-17-23(33-7)16-20(2)25(21)31)15-22(29)18-27(5)12-8-13-28(27,6)24(30)11-14-26(3,4)32/h9,16-17,31-32H,8,10-15,18H2,1-7H3/b19-9+/t27-,28+/m1/s1