<|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:
4.8 4.8 4.8
121 121 86
Mg
0.31 0.00 0.73
Mg
0.00 0.31 0.73
Cd
0.00 0.00 0.46
Cu
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.8 4.8 4.8
121 121 86
Mg
0.31 0.00 0.73
Mg
0.00 0.31 0.73
Cd
0.00 0.00 0.46
Cu
0.00 0.00 0.00
Identify the crystal system.