<s>[INST] <<SYS>>
You are an expert in regular expressions (regex)
<</SYS>>

Find a regex pattern that matches the following string:
2006$3D08$3D23+08:14:05.539 [/INST] pattern:
\d{4}\$3D\d{2}\$3D\d{2}\+\d{2}:\d{2}:\d{2}\.\d{3} </s>