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

Find a regex pattern that matches the following string:
2007%2405%2415T22:29:07.512 [/INST] pattern:
\d{4}%24\d{2}%24\d{2}T\d{2}:\d{2}:\d{2}\.\d{3} </s>