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

Find a regex pattern that matches the following string:
1990%5E12%5E19+02$7D48$7D49Z [/INST] pattern:
\d{4}%5E\d{2}%5E\d{2}\+\d{2}\$7D\d{2}\$7D\d{2}Z </s>