<|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:
5.2 5.2 5.2
90 90 90
Ca
0.00 0.00 0.00
Tl
0.62 0.62 0.62
Si
0.62 0.00 0.62
Si
0.62 0.62 0.00
Si
0.00 0.62 0.62
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.2 5.2 5.2
90 90 90
Ca
0.00 0.00 0.00
Tl
0.62 0.62 0.62
Si
0.62 0.00 0.62
Si
0.62 0.62 0.00
Si
0.00 0.62 0.62
Identify the crystal system.