<|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 0.27 0.65
Nb
0.27 0.00 0.65
Nb
0.00 0.00 0.00
Ir
0.27 0.27 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 0.27 0.65
Nb
0.27 0.00 0.65
Nb
0.00 0.00 0.00
Ir
0.27 0.27 0.00
Identify the crystal system.