InChI=1S/C25H28O5/c1-15(2)5-4-6-16(3)7-12-19-20(27)13-23-24(25(19)29)21(28)14-22(30-23)17-8-10-18(26)11-9-17/h5,7-11,13,22,26-27,29H,4,6,12,14H2,1-3H3/b16-7+/t22-/m0/s1