<|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:
4.9 4.9 4.9
59 59 59
Tl
0.49 0.49 0.49
Tl
0.23 0.23 0.23
Zn
0.74 0.74 0.74
Ni
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.9 4.9 4.9
59 59 59
Tl
0.49 0.49 0.49
Tl
0.23 0.23 0.23
Zn
0.74 0.74 0.74
Ni
0.00 0.00 0.00
Identify the crystal system.