<|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:
5.8 5.8 5.8
135 135 64
La
0.00 0.00 0.90
Tl
0.18 0.00 0.45
Si
0.00 0.18 0.45
Si
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.8 5.8 5.8
135 135 64
La
0.00 0.00 0.90
Tl
0.18 0.00 0.45
Si
0.00 0.18 0.45
Si
0.00 0.00 0.00
Identify the crystal system.