<|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:
2.9 4.2 4.2
40 90 90
Mn
0.47 0.00 0.81
Al
0.00 0.00 0.24
B
0.47 0.00 0.41
B
0.00 0.00 0.48
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
2.9 4.2 4.2
40 90 90
Mn
0.47 0.00 0.81
Al
0.00 0.00 0.24
B
0.47 0.00 0.41
B
0.00 0.00 0.48
Identify the crystal system.