InChI=1S/C26H34O13/c1-10-18(28)20(30)22(32)24(35-10)34-9-15-19(29)21(31)23(33)25(38-15)39-26(2,3)16-7-12-6-11-4-5-17(27)37-13(11)8-14(12)36-16/h4-6,8,10,15-16,18-25,28-33H,7,9H2,1-3H3