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

Find a regex pattern that matches the following string:
1997-01-21+16%7B32%7B09 [/INST] pattern:
\d{4}\-\d{2}\-\d{2}\+\d{2}%7B\d{2}%7B\d{2} </s>