InChI=1S/C20H23N3O7/c24-14-15(25)17(18(27)28)30-19(16(14)26)29-9-12-8-13(10-6-7-10)23-20(22-12)21-11-4-2-1-3-5-11/h1-5,8,10,14-17,19,24-26H,6-7,9H2,(H,27,28)(H,21,22,23)