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

Find a regex pattern that matches the following string:
2029$2B10$2B22T16$2329$2349.989Z [/INST] pattern:
\d{4}\$2B\d{2}\$2B\d{2}T\d{2}\$23\d{2}\$23\d{2}\.\d{3}Z </s>