InChI=1S/C23H22O6/c1-11(2)5-6-12-14(24)9-17-19(20(12)26)21(27)18-13-7-8-23(3,4)29-22(13)15(25)10-16(18)28-17/h5,7-10,24-26H,6H2,1-4H3