9H-fluoren-9-yl-(9-methylfluoren-9-yl)methanone

(1-methylpiperidin-1-ium-4-yl) 9H-fluorene-9-carboxylate,chloride

(1,2,6-trimethylpiperidin-1-ium-4-yl) 9H-fluorene-9-carboxylate,chloride