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

Find a regex pattern that matches the following string:
2003%5F04%5F23+23:22:18.841Z [/INST] pattern:
\d{4}%5F\d{2}%5F\d{2}\+\d{2}:\d{2}:\d{2}\.\d{3}Z </s>