(3S,4R)-1-[cis-4-Cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenylpiperidine-4-carboxylicacid-D4; (3S,4R)-1-[cis-4-Cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenyl-4-piperidinecarboxylic Acid-D4; [3S-[1(cis),3?,4?]]-1-[4-Cyano-4-(4-fluorophenyl) cyclohexyl]-3-methyl-4-phenyl-4-piperidinecarboxylic Acid-D4; Levocabastine-D4; Livostin