<|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:
4.3 5.5 5.5
39 90 90
Al
0.00 0.00 0.97
Tl
0.00 0.00 0.47
Tl
0.14 0.00 0.11
Os
0.14 0.00 0.21
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.3 5.5 5.5
39 90 90
Al
0.00 0.00 0.97
Tl
0.00 0.00 0.47
Tl
0.14 0.00 0.11
Os
0.14 0.00 0.21
Identify the crystal system.