<|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:
3.1 4.3 5.4
90 96 90
Hf
0.26 0.16 0.51
Cu
0.93 0.16 0.10
Cu
0.77 0.00 0.36
Sn
0.81 0.00 0.09
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.1 4.3 5.4
90 96 90
Hf
0.26 0.16 0.51
Cu
0.93 0.16 0.10
Cu
0.77 0.00 0.36
Sn
0.81 0.00 0.09
Identify the crystal system.