InChI=1S/C18H19NO3/c1-19-8-5-11-9-14(22-2)17(21)16-15(11)13(19)10-18(16)6-3-12(20)4-7-18/h3-4,6-7,9,13,21H,5,8,10H2,1-2H3/t13-/m0/s1