InChI=1S/C22H23N3O4/c1-9(23)13-18(26)17-15-11(22(2,3)25(17)20(13)28)8-10-6-5-7-12-14(10)16(15)19(27)21(29)24(12)4/h5-7,11,15,17,23,26-27H,8H2,1-4H3/t11-,15-,17+/m1/s1