Patent ID: 7619085

Claim:
A compound selected from (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide-(S)-pyrrolidone-5-carboxylic acid salt, (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide-(S)-pyrrolidone-5-carboxylic acid salt, (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide-(R)-pyrrolidone-5-carboxylic acid salt, or (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide-(R)-pyrrolidone-5-carboxylic acid salt.