<|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:
4.7 5.7 5.7
33 90 90
Nb
0.35 0.00 0.41
Al
0.00 0.00 0.86
Sn
0.00 0.00 0.81
Sn
0.35 0.00 0.37
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.7 5.7 5.7
33 90 90
Nb
0.35 0.00 0.41
Al
0.00 0.00 0.86
Sn
0.00 0.00 0.81
Sn
0.35 0.00 0.37
Identify the crystal system.