<|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:
10.8 10.8 10.8
19 19 19
La
0.00 0.00 0.93
Tl
0.00 0.00 0.11
Tl
0.00 0.00 0.75
Sn
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
10.8 10.8 10.8
19 19 19
La
0.00 0.00 0.93
Tl
0.00 0.00 0.11
Tl
0.00 0.00 0.75
Sn
0.00 0.00 0.00
Identify the crystal system.