<|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:
8.4 8.4 8.4
18 18 18
Al
0.00 0.00 0.00
Ni
0.00 0.00 0.40
Ru
0.00 0.00 0.18
Ru
0.00 0.00 0.62
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
8.4 8.4 8.4
18 18 18
Al
0.00 0.00 0.00
Ni
0.00 0.00 0.40
Ru
0.00 0.00 0.18
Ru
0.00 0.00 0.62
Identify the crystal system.