InChI=1S/C23H30O7/c1-8-9-15-10-17(25-3)23(18(11-15)26-4)30-14(2)21(24)16-12-19(27-5)22(29-7)20(13-16)28-6/h8,10-14,21,24H,1,9H2,2-7H3