<|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:
5.0 5.0 2.9
90 90 106
Ca
0.00 0.00 0.00
Zn
0.49 0.99 0.44
Zn
0.49 0.01 0.44
Tc
0.97 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.0 5.0 2.9
90 90 106
Ca
0.00 0.00 0.00
Zn
0.49 0.99 0.44
Zn
0.49 0.01 0.44
Tc
0.97 0.00 0.00
Identify the crystal system.