InChI=1S/C24H34O7/c1-14-7-8-20(28-16(3)25)23(5)11-9-18(15(2)22(27)31-23)13-21(29-17(4)26)24(6)12-10-19(14)30-24/h18-21H,1-2,7-13H2,3-6H3/t18-,19-,20-,21+,23-,24-/m1/s1