Get the before value of pipe in dropdown field

How can i get the before value of my dropdown field. Here is the code:
[select* your-recipient “Thasikhel|[email protected]”
“Sandringham |[email protected]”]

I need to get the before value(Thasikhel, Sandringham)? How is that possible without editing the core code of plugin?

https://www.ads-software.com/plugins/contact-form-7-to-database-extension/