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

Find a regex pattern that matches the following string:
2016%2E11%2E08 11:24:29.742 [/INST] pattern:
\d{4}%2E\d{2}%2E\d{2}\ \d{2}:\d{2}:\d{2}\.\d{3} </s>