InChI=1S/C22H30O7/c1-12-7-6-8-13(2)19(26-15(4)23)20-17(14(3)21(24)27-20)10-18-22(5,28-18)11-16(9-12)29-25/h8-9,16-20,25H,3,6-7,10-11H2,1-2,4-5H3