InChI=1/C18H21NO2/c1-14(2)8-9-17(20)21-18(15-6-4-3-5-7-15)16-10-12-19-13-11-16/h3-7,10-14,18H,8-9H2,1-2H3/t18-/m0/s1 62626133364B7E16