<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following crystal representation:
6.7 6.7 6.7
140 140 56
Ba
0.00 0.00 0.93
Na
0.00 0.26 0.97
Na
0.26 0.00 0.97
B
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.7 6.7 6.7
140 140 56
Ba
0.00 0.00 0.93
Na
0.00 0.26 0.97
Na
0.26 0.00 0.97
B
0.00 0.00 0.00
Identify the crystal system.