<|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:
4.9 4.9 4.9
141 141 55
Cu
0.62 0.00 0.16
Cu
0.00 0.62 0.16
Tc
0.00 0.00 0.33
B
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.9 4.9 4.9
141 141 55
Cu
0.62 0.00 0.16
Cu
0.00 0.62 0.16
Tc
0.00 0.00 0.33
B
0.00 0.00 0.00
Identify the crystal system.