<|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:
11.3 11.3 11.3
17 17 17
Sr
0.00 0.00 0.00
Mg
0.00 0.00 0.25
Mg
0.00 0.00 0.09
Zr
0.00 0.00 0.67
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
11.3 11.3 11.3
17 17 17
Sr
0.00 0.00 0.00
Mg
0.00 0.00 0.25
Mg
0.00 0.00 0.09
Zr
0.00 0.00 0.67
Identify the crystal system.