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

Find a regex pattern that matches the following string:
1996%3F02%3F02+08:17:16.259Z [/INST] pattern:
\d{4}%3F\d{2}%3F\d{2}\+\d{2}:\d{2}:\d{2}\.\d{3}Z </s>