<|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:
2.7 3.9 5.3
90 90 90
Cu
0.00 0.00 0.66
Re
0.36 0.96 0.98
Tc
0.00 0.00 0.00
Tc
0.36 0.96 0.35
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
2.7 3.9 5.3
90 90 90
Cu
0.00 0.00 0.66
Re
0.36 0.96 0.98
Tc
0.00 0.00 0.00
Tc
0.36 0.96 0.35
Identify the crystal system.