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

Find a regex pattern that matches the following string:
1990%2312%2328+04%2B55%2B27.947Z [/INST] pattern:
\d{4}%23\d{2}%23\d{2}\+\d{2}%2B\d{2}%2B\d{2}\.\d{3}Z </s>