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

Find a regex pattern that matches the following string:
2021%2D03%2D10T03$3F21$3F40.312Z [/INST] pattern:
\d{4}%2D\d{2}%2D\d{2}T\d{2}\$3F\d{2}\$3F\d{2}\.\d{3}Z </s>