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

Find a regex pattern that matches the following string:
2012$3C07$3C24+11:39:46.050Z [/INST] pattern:
\d{4}\$3C\d{2}\$3C\d{2}\+\d{2}:\d{2}:\d{2}\.\d{3}Z </s>