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

Find a regex pattern that matches the following string:
2029%2F12%2F01T19%7B20%7B37.836Z [/INST] pattern:
\d{4}%2F\d{2}%2F\d{2}T\d{2}%7B\d{2}%7B\d{2}\.\d{3}Z </s>