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

Find a regex pattern that matches the following string:
1990-01-17 05%2D07%2D48.886 [/INST] pattern:
\d{4}\-\d{2}\-\d{2}\ \d{2}%2D\d{2}%2D\d{2}\.\d{3} </s>