InChI=1S/C22H30O7/c1-8-12(4)21(26)28-15(10-9-11(2)3)13(5)16-17(24)20-22(7,29-20)19(25)18(16)27-14(6)23/h8-9,15-18,20,24H,5,10H2,1-4,6-7H3/b12-8-