<|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:
3.1 3.1 6.7
90 90 118
Nb
0.00 0.00 0.20
Hg
0.58 0.00 0.66
B
0.58 0.00 0.23
B
0.00 0.00 0.68
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.1 3.1 6.7
90 90 118
Nb
0.00 0.00 0.20
Hg
0.58 0.00 0.66
B
0.58 0.00 0.23
B
0.00 0.00 0.68
Identify the crystal system.