InChI=1S/C22H26N2O4/c1-13(25)21-7-4-9-24-10-8-22(20(21)24)16-6-5-14(27-2)11-17(16)23-18(22)15(12-21)19(26)28-3/h4-7,11,13,20,23,25H,8-10,12H2,1-3H3/t13-,20-,21-,22-/m0/s1