4

Zr      0.149777555970285      0.093644321539677      0.273541036547340
Cu      1.532739635050214      1.522409891693018     -0.111965797130296
Cu      1.794978828798281     -0.196043819845038      1.311132695001135
Zr      0.291192563847456      1.306912291017673      1.428690875006539