<|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:
7.9 7.9 7.9
152 152 39
K
0.00 0.00 0.33
Ca
0.00 0.00 0.11
Cu
0.00 0.00 0.30
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
7.9 7.9 7.9
152 152 39
K
0.00 0.00 0.33
Ca
0.00 0.00 0.11
Cu
0.00 0.00 0.30
Identify the crystal system.