InChI=1/C21H30N2O4/c1-22(2,3)16-10-18(24)14-20(12-16)26-8-7-9-27-21-13-17(23(4,5)6)11-19(25)15-21/h10-15H,7-9H2,1-6H3/p+2/fC21H32N2O4/h24-25H/q+2 72794B16EFFB14E4