InChI=1S/C23H31NO8/c25-12-18-20(27)21(28)22(29)23(32-18)31-16-6-3-14(4-7-16)5-8-19(26)30-13-15-9-11-24-10-1-2-17(15)24/h3-8,15,17-18,20-23,25,27-29H,1-2,9-13H2/b8-5+