<|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:
7.7 7.7 4.7
90 90 153
Sn
0.78 0.84 0.16
Sn
0.78 0.16 0.49
Au
0.78 0.91 0.16
Au
0.78 0.09 0.49
Au
0.78 0.90 0.16
Au
0.78 0.10 0.49
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
7.7 7.7 4.7
90 90 153
Sn
0.78 0.84 0.16
Sn
0.78 0.16 0.49
Au
0.78 0.91 0.16
Au
0.78 0.09 0.49
Au
0.78 0.90 0.16
Au
0.78 0.10 0.49
Identify the crystal system.