<|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:
6.4 6.4 6.4
26 26 26
Zn
0.00 0.00 0.00
Si
0.00 0.00 0.54
Si
0.00 0.00 0.07
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.4 6.4 6.4
26 26 26
Zn
0.00 0.00 0.00
Si
0.00 0.00 0.54
Si
0.00 0.00 0.07
Identify the crystal system.