<|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:
6.3 6.3 6.3
59 59 59
Zr
0.00 0.00 0.00
Tl
0.33 0.33 0.55
Tl
0.33 0.55 0.33
Tl
0.55 0.33 0.33
Tl
0.55 0.55 0.55
Pb
0.22 0.22 0.22
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.3 6.3 6.3
59 59 59
Zr
0.00 0.00 0.00
Tl
0.33 0.33 0.55
Tl
0.33 0.55 0.33
Tl
0.55 0.33 0.33
Tl
0.55 0.55 0.55
Pb
0.22 0.22 0.22
Identify the crystal system.