<|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:
5.4 5.4 3.3
90 90 119
Sn
0.71 0.57 0.73
Sn
0.00 0.13 0.60
Br
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.4 5.4 3.3
90 90 119
Sn
0.71 0.57 0.73
Sn
0.00 0.13 0.60
Br
0.00 0.00 0.00
Identify the crystal system.