InChI=1S/C20H28N2O7/c1-10(2)7-13(22-19(27)18(26)15(25)9-21-11(3)23)16-8-12-5-4-6-14(24)17(12)20(28)29-16/h4-6,10,13,15-16,18,24-26H,7-9H2,1-3H3,(H,21,23)(H,22,27)/t13-,15-,16-,18-/m0/s1