<|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:
5.1 5.1 5.1
144 144 50
Mn
0.00 0.00 0.01
Nb
0.00 0.00 0.09
Os
0.00 0.00 0.20
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.1 5.1 5.1
144 144 50
Mn
0.00 0.00 0.01
Nb
0.00 0.00 0.09
Os
0.00 0.00 0.20
Identify the crystal system.