<|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:
3.8 3.8 6.4
90 90 96
Sr
0.00 0.00 0.20
Cr
0.50 0.00 0.91
Cr
0.50 0.00 0.49
Br
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.8 3.8 6.4
90 90 96
Sr
0.00 0.00 0.20
Cr
0.50 0.00 0.91
Cr
0.50 0.00 0.49
Br
0.00 0.00 0.00
Identify the crystal system.