InChI=1S/C25H34O4/c1-15(2)10-19-12-17(4)24(29-19)9-8-23(5)13-20-16(3)11-22(27)25(20,28)18(14-26)6-7-21(23)24/h6,10-11,14,17,19-21,28H,7-9,12-13H2,1-5H3/b18-6-/t17-,19-,20+,21+,23+,24-,25-/m0/s1