<|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:
5.7 6.6 6.6
31 90 90
K
0.86 0.00 0.66
K
0.00 0.00 0.67
Se
0.00 0.00 0.34
Br
0.86 0.00 0.27
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.7 6.6 6.6
31 90 90
K
0.86 0.00 0.66
K
0.00 0.00 0.67
Se
0.00 0.00 0.34
Br
0.86 0.00 0.27
Identify the crystal system.