InChI=1/C18H21NO2/c1-12(20)13-8-10-14(11-9-13)19-18(21)17-15-6-4-2-3-5-7-16(15)17/h2-3,8-11,15-17H,4-7H2,1H3,(H,19,21)/b3-2-/t15-,16+,17?/f/h19H FA53958EAC77634A