<|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:
9.9 9.9 9.9
20 20 20
Ga
0.00 0.00 0.00
Sb
0.00 0.00 0.39
Sb
0.00 0.00 0.69
Br
0.00 0.00 0.54
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
9.9 9.9 9.9
20 20 20
Ga
0.00 0.00 0.00
Sb
0.00 0.00 0.39
Sb
0.00 0.00 0.69
Br
0.00 0.00 0.54
Identify the crystal system.