4

O       0.183608372117365      0.156231464329719      0.350629051383609
O       1.102004403318472      1.703599850767824      0.151540286486125
Be      1.289736815429668      0.298110161213441      1.574732397371812
Be      0.059262183775036      1.227544506062798      1.737155362556166