4

O       0.040505707622385      0.234661386579067     -0.143042822348151
H       1.669044943260724      1.425130862651436      0.027681380814270
Si      1.518850981348405      0.245777691189758      1.239608025639277
Ca      0.093653931453999      1.628822773473447      1.140071638987727