<|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:
3.0 3.0 8.1
90 90 109
Hf
0.75 0.00 0.17
Hf
0.75 0.00 0.91
Re
0.00 0.00 0.04
P
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.0 3.0 8.1
90 90 109
Hf
0.75 0.00 0.17
Hf
0.75 0.00 0.91
Re
0.00 0.00 0.04
P
0.00 0.00 0.00
Identify the crystal system.