<|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 4.5
59 59 59
Er
0.21 0.21 0.21
Fe
0.00 0.00 0.00
Ir
0.60 0.60 0.60
Ir
0.81 0.81 0.81
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.5 4.5 4.5
59 59 59
Er
0.21 0.21 0.21
Fe
0.00 0.00 0.00
Ir
0.60 0.60 0.60
Ir
0.81 0.81 0.81
Identify the crystal system.