<|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:
6.7 6.7 2.8
78 77 23
Nb
0.90 0.02 0.84
Pt
0.90 0.02 0.24
W
0.90 0.02 0.67
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.7 6.7 2.8
78 77 23
Nb
0.90 0.02 0.84
Pt
0.90 0.02 0.24
W
0.90 0.02 0.67
Identify the crystal system.