InChI=1S/C23H28O8/c1-11-5-13(25)6-14(26)16(11)19(28)31-15-8-21(4)17-18(27)20(2,3)10-22(17,29)7-12(9-24)23(15,21)30/h5-7,9,15,17-18,25-27,29-30H,8,10H2,1-4H3