<|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:
3.1 3.5 8.7
90 90 90
Ca
0.56 0.74 0.12
Ca
0.00 0.00 0.85
Tc
0.00 0.00 0.99
Rh
0.56 0.74 0.88
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.1 3.5 8.7
90 90 90
Ca
0.56 0.74 0.12
Ca
0.00 0.00 0.85
Tc
0.00 0.00 0.99
Rh
0.56 0.74 0.88
Identify the crystal system.