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

Find a regex pattern that matches the following string:
2021$5D12$5D01+20:52:51Z [/INST] pattern:
\d{4}\$5D\d{2}\$5D\d{2}\+\d{2}:\d{2}:\d{2}Z </s>