InChI=1S/C24H28O7/c1-7-14(4)23(27)30-21-19-16(10-8-15-9-11-17(25)29-20(15)19)28-22(21)24(5,6)31-18(26)12-13(2)3/h7-11,13,21-22H,12H2,1-6H3/b14-7-