How to get filename in firebase?

Question

firebase

Hello!
I store pictures in sorage firebase. I have the name of the image and its url. I need to implement image deletion.
This is how I implement the removal of firebase.storage().ref(`imageAbonents/-Li7sw0IqSISlNAZXo6f.jpg`).delete(). However, I have a name and no file extension. The question is how do I get either the name of the picture or its extension. Thanks in advance!!!