<|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:
5.2 5.2 5.2
59 59 59
Ca
0.00 0.00 0.00
Cu
0.84 0.84 0.84
Ru
0.77 0.77 0.60
Ru
0.77 0.60 0.77
Ru
0.60 0.77 0.77
Ru
0.60 0.60 0.60
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.2 5.2 5.2
59 59 59
Ca
0.00 0.00 0.00
Cu
0.84 0.84 0.84
Ru
0.77 0.77 0.60
Ru
0.77 0.60 0.77
Ru
0.60 0.77 0.77
Ru
0.60 0.60 0.60
Identify the crystal system.