Compute the value of the expression
\[ 2009^4 - 4 \times 2007^4 + 6 \times 2005^4 - 4 \times 2003^4 + 2001^4 \, .\]
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Compute the value of the expression
\[ 2009^4 - 4 \times 2007^4 + 6 \times 2005^4 - 4 \times 2003^4 + 2001^4 \, .\]
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
384
Compute the value of the expression
\[ 2009^4 - 4 \times 2007^4 + 6 \times 2005^4 - 4 \times 2003^4 + 2001^4 \, .\]
train