4

O       0.247064045499426      0.274055187079818     -0.133220418693561
Si      1.229532948656439      1.476815291227968      0.045049859453315
Si      1.438266068320560      0.007440768431917      1.335164132608151
O       0.332422810380034      1.226036500432365      1.633629835494273