InChI=1S/C23H31NO6/c1-5-6-10-16(2)12-13-17(3)21(26)20-19(25)15-18(30-22(20)27)11-8-7-9-14-24-23(28)29-4/h9,12-15,25H,5-8,10-11H2,1-4H3,(H,24,28)/b14-9+,16-12+,17-13+