InChI=1S/C20H23N3O7/c1-9-8-12(10-6-7-10)23-20(21-9)22-11-4-2-3-5-13(11)29-19-16(26)14(24)15(25)17(30-19)18(27)28/h2-5,8,10,14-17,19,24-26H,6-7H2,1H3,(H,27,28)(H,21,22,23)