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

Find a regex pattern that matches the following string:
2011%3F05%3F31 08%5B43%5B18.142Z [/INST] pattern:
\d{4}%3F\d{2}%3F\d{2}\ \d{2}%5B\d{2}%5B\d{2}\.\d{3}Z </s>