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

Find a regex pattern that matches the following string:
2018%5C03%5C05T19$7C03$7C04.327 [/INST] pattern:
\d{4}%5C\d{2}%5C\d{2}T\d{2}\$7C\d{2}\$7C\d{2}\.\d{3} </s>