<|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:
9.1 9.1 9.1
18 18 18
Ti
0.00 0.00 0.92
Ti
0.00 0.00 0.77
Al
0.00 0.00 0.45
Au
0.00 0.00 0.23
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
9.1 9.1 9.1
18 18 18
Ti
0.00 0.00 0.92
Ti
0.00 0.00 0.77
Al
0.00 0.00 0.45
Au
0.00 0.00 0.23
Identify the crystal system.