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

Find a regex pattern that matches the following string:
2018-06-07T09%7B30%7B42.257Z [/INST] pattern:
\d{4}\-\d{2}\-\d{2}T\d{2}%7B\d{2}%7B\d{2}\.\d{3}Z </s>