<|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:
3.7 4.1 4.2
90 90 90
Nb
0.87 0.03 0.00
Nb
0.00 0.03 0.09
Zn
0.87 0.00 0.09
Si
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.7 4.1 4.2
90 90 90
Nb
0.87 0.03 0.00
Nb
0.00 0.03 0.09
Zn
0.87 0.00 0.09
Si
0.00 0.00 0.00
Identify the crystal system.