InChI=1S/C25H28O6/c1-13(2)5-10-16-22(28)21-18(27)12-19(14-6-8-15(26)9-7-14)30-24(21)17-11-20(25(3,4)29)31-23(16)17/h5-9,19-20,26,28-29H,10-12H2,1-4H3/t19-,20?/m0/s1