<|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:
8.4 8.4 8.4
160 160 28
P
0.00 0.00 0.59
Ir
0.00 0.00 0.53
Br
0.00 0.00 0.21
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
8.4 8.4 8.4
160 160 28
P
0.00 0.00 0.59
Ir
0.00 0.00 0.53
Br
0.00 0.00 0.21
Identify the crystal system.