[2-(3,4-Dimethoxy-phenyl)-ethyl]-{2-[5-methoxy-2-(4-trifluoromethyl-phenylethynyl)-phenyl]-1-methyl-ethyl}-methyl-amine

[2-(3,4-Dimethoxy-phenyl)-ethyl]-{2-[5-methoxy-2-(4-methylsulfanyl-phenylethynyl)-phenyl]-1-methyl-ethyl}-methyl-amine

4-[2-(2-{[2-(3,4-Dimethoxy-phenyl)-ethyl]-methyl-amino}-propyl)-4-methoxy-phenylethynyl]-benzonitrile

[2-(3,4-Dimethoxy-phenyl)-ethyl]-{2-[2-(4-methanesulfinyl-phenylethynyl)-5-methoxy-phenyl]-1-methyl-ethyl}-methyl-amine