<|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:
2.5 2.5 7.4
90 90 90
Cr
0.25 0.25 0.29
Cr
0.00 0.00 0.90
Si
0.00 0.00 0.46
Ni
0.25 0.25 0.79
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
2.5 2.5 7.4
90 90 90
Cr
0.25 0.25 0.29
Cr
0.00 0.00 0.90
Si
0.00 0.00 0.46
Ni
0.25 0.25 0.79
Identify the crystal system.