<|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:
4.5 4.5 8.9
102 102 59
Ba
0.11 0.00 0.87
Ba
0.16 0.00 0.61
Ti
0.36 0.00 0.26
Si
0.77 0.00 0.20
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.5 4.5 8.9
102 102 59
Ba
0.11 0.00 0.87
Ba
0.16 0.00 0.61
Ti
0.36 0.00 0.26
Si
0.77 0.00 0.20
Identify the crystal system.