<|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:
7.6 7.6 7.6
33 33 33
Zr
0.00 0.00 0.11
Zr
0.00 0.00 0.21
Zr
0.00 0.00 0.91
Cu
0.00 0.00 0.00
Cu
0.00 0.00 0.70
Cu
0.00 0.00 0.40
Cu
0.00 0.00 0.81
Cu
0.00 0.00 0.51
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
7.6 7.6 7.6
33 33 33
Zr
0.00 0.00 0.11
Zr
0.00 0.00 0.21
Zr
0.00 0.00 0.91
Cu
0.00 0.00 0.00
Cu
0.00 0.00 0.70
Cu
0.00 0.00 0.40
Cu
0.00 0.00 0.81
Cu
0.00 0.00 0.51
Identify the crystal system.