<|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:
3.4 3.6 8.5
90 90 90
Na
0.72 0.80 0.19
Na
0.00 0.00 0.53
Mg
0.00 0.00 0.87
Ag
0.72 0.80 0.56
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.4 3.6 8.5
90 90 90
Na
0.72 0.80 0.19
Na
0.00 0.00 0.53
Mg
0.00 0.00 0.87
Ag
0.72 0.80 0.56
Identify the crystal system.