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

Find a regex pattern that matches the following string:
1991$3D06$3D21+01%7C05%7C20.587Z [/INST] pattern:
\d{4}\$3D\d{2}\$3D\d{2}\+\d{2}%7C\d{2}%7C\d{2}\.\d{3}Z </s>