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

Find a regex pattern that matches the following string:
2001-07-27 12$2E56$2E42.876Z [/INST] pattern:
\d{4}\-\d{2}\-\d{2}\ \d{2}\$2E\d{2}\$2E\d{2}\.\d{3}Z </s>