<|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:
3.4 3.4 6.7
90 90 90
Ca
0.00 0.00 0.45
Zn
0.00 0.00 0.60
Zn
0.68 0.68 0.33
Pd
0.68 0.68 0.40
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.4 3.4 6.7
90 90 90
Ca
0.00 0.00 0.45
Zn
0.00 0.00 0.60
Zn
0.68 0.68 0.33
Pd
0.68 0.68 0.40
Identify the crystal system.