InChI=1/C23H22N2O5/c1-4-6-17-11-15(13-20(21(17)26)30-5-2)12-18(14-24)22(27)25-19-9-7-16(8-10-19)23(28)29-3/h4,7-13,26H,1,5-6H2,2-3H3,(H,25,27)/b18-12+/f/h25H 652A9DBA276B69BD