How to use eToken certificate with build-in Mac OS X VPN client?

I've faced with the following problem:

I have an eToken digital certificate, SafeNet Authentication Client 8.2 and build-in Mac OS X VPN Client.

When I plug in the eToken to my MacBook Pro it appears in SafeNet Authentication Client and in "My Token" section of a Keychain Access application. Then I create a new Cisco IPsec VPN connection with the server address I want to connect. Click the "Authentication Settings..." button and try to select certificate from the list. Unfortunately, there is no my certificate from eToken.

Do anybody know how to use etoken certificate with build-in macosx vpn client? is it even possible?

P.S. my eToken works fine with windows cisco vpn client