#$%^&*AU2015224493A120151001.pdf#####H:szp\Interwoven\NRPortbl\DCC\SZP\8388844 docx-10/09/2015 ABSTRACT This invention is directed to the (S)-enantiomer of the compound of formula (I): o o 0 00 N 0 YCF3 5 or a pharmaceutically acceptable solvate or prodrug thereof This (S)-enantiomer is useful for the treatment of diseases or conditions, such as pain, which are ameliorated or alleviated by the modulation of voltage-gated sodium channels.