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

Find a regex pattern that matches the following string:
2021%6005%6004T23$2546$2541.657 [/INST] pattern:
\d{4}%60\d{2}%60\d{2}T\d{2}\$25\d{2}\$25\d{2}\.\d{3} </s>