ATOM 9
1 Z Si 20.6694 -16.8579 #2-
2 X F 20.6694 -14.9568
3 X F 20.6694 -18.7589
4 X F 19.2934 -15.8543
5 X F 19.3693 -18.1094
6 X F 22.1971 -18.2747
7 X F 22.3488 -15.6063
8 Z Na 26.8889 -18.3498 #+
9 Z Na 26.8131 -15.9487 #+
BOND 6
1 1 2 1
2 1 3 1
3 1 4 1
4 1 5 1
5 1 6 1
6 1 7 1