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

Find a regex pattern that matches the following string:
2000%5B09%5B16T07:09:45.974Z [/INST] pattern:
\d{4}%5B\d{2}%5B\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z </s>