InChI=1S/C25H36O4/c1-14(2)10-16-11-15(3)25(29-16)9-8-23(4)12-18-21-17(6-7-20(23)25)22(26)28-19(21)13-24(18,5)27/h6,10,15-16,18-21,27H,7-9,11-13H2,1-5H3/b17-6+/t15-,16-,18-,19-,20+,21+,23+,24+,25-/m0/s1