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

Find a regex pattern that matches the following string:
1997%5C06%5C18+05$2F22$2F49.065 [/INST] pattern:
\d{4}%5C\d{2}%5C\d{2}\+\d{2}\$2F\d{2}\$2F\d{2}\.\d{3} </s>