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

Find a regex pattern that matches the following string:
1998$2F05$2F06+17:18:26.326Z [/INST] pattern:
\d{4}\$2F\d{2}\$2F\d{2}\+\d{2}:\d{2}:\d{2}\.\d{3}Z </s>