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