<|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:
4.1 4.1 4.2
90 90 90
Nb
0.05 0.00 0.12
Nb
0.00 0.05 0.12
Tl
0.05 0.05 0.00
Os
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.1 4.1 4.2
90 90 90
Nb
0.05 0.00 0.12
Nb
0.00 0.05 0.12
Tl
0.05 0.05 0.00
Os
0.00 0.00 0.00
Identify the crystal system.