<|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:
2.8 3.9 6.8
90 90 90
Na
0.00 0.00 0.00
V
0.38 0.93 0.27
V
0.38 0.93 0.51
Ir
0.00 0.00 0.39
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
2.8 3.9 6.8
90 90 90
Na
0.00 0.00 0.00
V
0.38 0.93 0.27
V
0.38 0.93 0.51
Ir
0.00 0.00 0.39
Identify the crystal system.