<|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:
4.9 4.9 5.5
90 90 90
Sr
0.45 0.45 0.00
Ca
0.00 0.45 0.77
Ca
0.45 0.00 0.77
Be
0.00 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.9 4.9 5.5
90 90 90
Sr
0.45 0.45 0.00
Ca
0.00 0.45 0.77
Ca
0.45 0.00 0.77
Be
0.00 0.00 0.00
Identify the crystal system.