<|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:
3.5 5.0 5.9
90 97 90
Na
0.62 0.51 0.63
Na
0.53 0.00 0.66
Pb
0.86 0.51 0.94
Au
0.81 0.00 0.47
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.5 5.0 5.9
90 97 90
Na
0.62 0.51 0.63
Na
0.53 0.00 0.66
Pb
0.86 0.51 0.94
Au
0.81 0.00 0.47
Identify the crystal system.