InChI=1S/C25H34O7/c1-12(2)16-15-9-8-13(3)20-17-18(25(6,28)31-20)22(26)30-19(17)14(4)10-11-24(15,5)32-23(27)21(16)29-7/h8,12,15,17-18,20,28H,9-11H2,1-7H3/b13-8-,19-14+/t15-,17+,18-,20-,24+,25-/m1/s1