<|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:
6.6 6.6 6.6
147 146 47
Cu
0.00 0.91 0.75
Sn
0.00 0.91 0.87
Sn
0.00 0.00 0.28
P
0.00 0.00 0.19
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.6 6.6 6.6
147 146 47
Cu
0.00 0.91 0.75
Sn
0.00 0.91 0.87
Sn
0.00 0.00 0.28
P
0.00 0.00 0.19
Identify the crystal system.