InChI=1S/C23H28O7/c1-4-6-7-9-15-10-16(29-3)12-19(25)21(15)23(28)30-17-11-14(8-5-2)20(22(26)27)18(24)13-17/h10-13,24-25H,4-9H2,1-3H3,(H,26,27)