<|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:
3.6 3.6 7.4
90 90 92
Na
0.00 0.00 0.65
Zn
0.49 0.00 0.65
Hg
0.00 0.00 0.25
Hg
0.49 0.00 0.59
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.6 3.6 7.4
90 90 92
Na
0.00 0.00 0.65
Zn
0.49 0.00 0.65
Hg
0.00 0.00 0.25
Hg
0.49 0.00 0.59
Identify the crystal system.