InChI=1S/C23H22O7/c1-11-7-17(29-18(27)8-13-3-5-15(25)6-4-13)20-12(2)23(28)30-22(20)21-14(10-24)9-16(26)19(11)21/h3-6,9,17,20-22,24-25H,2,7-8,10H2,1H3