<|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:
3.5 4.0 6.3
90 90 90
Tl
0.76 0.98 0.45
Tl
0.76 0.98 0.80
Hg
0.00 0.00 0.13
Ru
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.5 4.0 6.3
90 90 90
Tl
0.76 0.98 0.45
Tl
0.76 0.98 0.80
Hg
0.00 0.00 0.13
Ru
0.00 0.00 0.00
Identify the crystal system.