Help Creating Custom Vulnerability Signature To Detect Specific URI String

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Help Creating Custom Vulnerability Signature To Detect Specific URI String

Hello,

Wondering if anyone can assist in developing a custom threat signature to detect inbound web request with this particular regex within the URI string?

.*(?:[{(]|%7B|%28).*(?:[})]|%7D|%29).*

All attempts have came up with syntax errors

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