InChI=1/C18H18N2O2/c21-18-9-8-15-7-6-14(12-17(15)22-18)13-19-10-11-20-16-4-2-1-3-5-16/h1-9,12,19-20H,10-11,13H2/p+1/fC18H19N2O2/h19H/q+1 74333BB4E75C934C