<|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:
4.2 4.2 6.5
103 103 45
Cu
0.25 0.00 0.26
Re
0.76 0.00 0.21
Re
0.36 0.00 0.24
Br
0.70 0.00 0.09
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.2 4.2 6.5
103 103 45
Cu
0.25 0.00 0.26
Re
0.76 0.00 0.21
Re
0.36 0.00 0.24
Br
0.70 0.00 0.09
Identify the crystal system.