InChI=1/C13H16N2O5/c1-7-5-4-6-9(10(7)16)12(18)20-8(2)11(17)15-13(19)14-3/h4-6,8,16H,1-3H3,(H2,14,15,17,19)/t8-/m0/s1/f/h14-15H F2D957C0DBBFDE5E