<|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 4.7 4.7
49 90 90
Nb
0.51 0.00 0.08
B
0.00 0.00 0.93
B
0.51 0.00 0.64
B
0.00 0.00 0.22
B
0.51 0.00 0.11
B
0.00 0.00 0.99
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.0 4.7 4.7
49 90 90
Nb
0.51 0.00 0.08
B
0.00 0.00 0.93
B
0.51 0.00 0.64
B
0.00 0.00 0.22
B
0.51 0.00 0.11
B
0.00 0.00 0.99
Identify the crystal system.