<|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:
4.5 4.5 3.3
90 90 90
Nb
0.00 0.24 0.63
Nb
0.24 0.00 0.63
Cu
0.00 0.00 0.00
W
0.24 0.24 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.5 4.5 3.3
90 90 90
Nb
0.00 0.24 0.63
Nb
0.24 0.00 0.63
Cu
0.00 0.00 0.00
W
0.24 0.24 0.00
Identify the crystal system.