<|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:
3.9 4.1 7.5
90 90 90
Na
0.00 0.00 0.15
Si
0.93 0.07 0.38
Te
0.00 0.00 0.81
Te
0.93 0.07 0.91
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.9 4.1 7.5
90 90 90
Na
0.00 0.00 0.15
Si
0.93 0.07 0.38
Te
0.00 0.00 0.81
Te
0.93 0.07 0.91
Identify the crystal system.