<|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:
3.0 4.2 5.4
90 90 90
Sr
0.00 0.00 0.93
Nb
0.52 0.08 0.85
B
0.52 0.08 0.38
B
0.00 0.00 0.28
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.0 4.2 5.4
90 90 90
Sr
0.00 0.00 0.93
Nb
0.52 0.08 0.85
B
0.52 0.08 0.38
B
0.00 0.00 0.28
Identify the crystal system.