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

Find a regex pattern that matches the following string:
1991%2B06%2B20T12$2308$2350Z [/INST] pattern:
\d{4}%2B\d{2}%2B\d{2}T\d{2}\$23\d{2}\$23\d{2}Z </s>