4

At      0.200202585745418      0.104709776841135     -0.231012737717889
At      1.730340095805487      1.217096268505821      0.183338364205747
At      1.518885356103393      0.244738022531587      1.733932027801466
At      0.219018979868851      1.286434701090954      1.605653679666600