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

Find a regex pattern that matches the following string:
2013%3B01%3B23 07:21:27.628Z [/INST] pattern:
\d{4}%3B\d{2}%3B\d{2}\ \d{2}:\d{2}:\d{2}\.\d{3}Z </s>