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

Find a regex pattern that matches the following string:
2003%2E10%2E09+16$7B19$7B55.552 [/INST] pattern:
\d{4}%2E\d{2}%2E\d{2}\+\d{2}\$7B\d{2}\$7B\d{2}\.\d{3} </s>