InChI=1/C15H20N2O4/c18-12-3-1-6-17(10-12)15(19)16-11-4-5-13-14(9-11)21-8-2-7-20-13/h4-5,9,12,18H,1-3,6-8,10H2,(H,16,19)/t12-/m0/s1/f/h16H E5DE6B3E2150ABA3