<|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:
3.9 3.9 14.4
90 90 90
Tl
0.00 0.95 0.67
Tl
0.95 0.00 0.75
Fe
0.00 0.00 0.00
Cu
0.95 0.95 0.21
Cu
0.95 0.95 0.00
Cu
0.00 0.00 0.21
Se
0.95 0.00 0.90
Se
0.00 0.95 0.65
Se
0.00 0.95 0.51
Se
0.95 0.00 0.76
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.9 3.9 14.4
90 90 90
Tl
0.00 0.95 0.67
Tl
0.95 0.00 0.75
Fe
0.00 0.00 0.00
Cu
0.95 0.95 0.21
Cu
0.95 0.95 0.00
Cu
0.00 0.00 0.21
Se
0.95 0.00 0.90
Se
0.00 0.95 0.65
Se
0.00 0.95 0.51
Se
0.95 0.00 0.76
Identify the crystal system.