<|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:
7.2 7.2 7.2
23 23 23
Ni
0.00 0.00 0.00
P
0.00 0.00 0.75
P
0.00 0.00 0.33
Ru
0.00 0.00 0.54
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
7.2 7.2 7.2
23 23 23
Ni
0.00 0.00 0.00
P
0.00 0.00 0.75
P
0.00 0.00 0.33
Ru
0.00 0.00 0.54
Identify the crystal system.