InChI=1/C21H24N2O4/c1-26-18-11-16-17(12-19(18)27-2)21(8-3-4-9-21)13-22-20(16)14-6-5-7-15(10-14)23(24)25/h5-7,10-12,20,22H,3-4,8-9,13H2,1-2H3/p+1/t20-/m1/s1/fC21H25N2O4/h22H/q+1 D715816C97638030