InChI=1/C18H18N2O3/c1-11-4-3-5-13(8-11)17-10-16(19-20(17)12(2)21)15-7-6-14(22)9-18(15)23/h3-9,17,22-23H,10H2,1-2H3/t17-/m1/s1 34F3FD2705443325