<|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:
5.6 5.6 3.3
90 90 118
Na
0.41 0.39 0.67
Na
0.41 0.61 0.67
Cu
0.00 0.00 0.00
Sn
0.82 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.6 5.6 3.3
90 90 118
Na
0.41 0.39 0.67
Na
0.41 0.61 0.67
Cu
0.00 0.00 0.00
Sn
0.82 0.00 0.00
Identify the crystal system.