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

Find a regex pattern that matches the following string:
2013%2301%2330T21:32:46.504Z [/INST] pattern:
\d{4}%23\d{2}%23\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z </s>