<|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:
4.3 4.3 12.1
90 90 117
Ba
0.23 0.00 0.66
Ba
0.23 0.00 0.40
Sr
0.00 0.00 0.03
Cl
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.3 4.3 12.1
90 90 117
Ba
0.23 0.00 0.66
Ba
0.23 0.00 0.40
Sr
0.00 0.00 0.03
Cl
0.00 0.00 0.00
Identify the crystal system.