1 50B 13-diphenylalkyl berberine 1.000 2 K0F 16,17-dimethoxy-21-(4-pyridin-4-ylbutyl)-5,7-dioxa-13$L^{4}-azapentacyclo[11.8.0.0^{2,10}.0^{4,8}.0^{15,20}]henicosa-1(21),2(10),3,8,13,15,17,19-octaene 0.810