InChI=1/C18H22N2O2/c1-10(2)8-13-16(18(13,4)5)17(21)20-12-6-7-15-14(9-12)19-11(3)22-15/h6-9,13,16H,1-5H3,(H,20,21)/t13-,16+/m0/s1/f/h20H 41368D505B888662