<|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:
3.8 3.8 5.8
90 90 90
Na
0.90 0.90 0.25
Na
0.90 0.90 0.50
Tc
0.00 0.00 0.00
Au
0.00 0.00 0.88
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.8 3.8 5.8
90 90 90
Na
0.90 0.90 0.25
Na
0.90 0.90 0.50
Tc
0.00 0.00 0.00
Au
0.00 0.00 0.88
Identify the crystal system.