InChI=1/C20H24N2O4/c23-19-7-3-1-5-17(19)15-21-9-11-25-13-14-26-12-10-22-16-18-6-2-4-8-20(18)24/h1-8,15-16,23-24H,9-14H2/p+2/b21-15+,22-16?/fC20H26N2O4/h21-22H/q+2 62E22A8BE22F9BDB