InChI=1/C18H18N2O3/c1-12(21)20-18(14-5-9-16(23-2)10-6-14)11-17(19-20)13-3-7-15(22)8-4-13/h3-10,18,22H,11H2,1-2H3/t18-/m0/s1 208E7DFA344042CB