InChI=1/C20H19NO3/c1-23-15-7-8-17-16-9-10-21(12-14-5-3-2-4-6-14)13-18(16)20(22)24-19(17)11-15/h2-8,11H,9-10,12-13H2,1H3/p+1/fC20H20NO3/h21H/q+1 537FD45402ABF483