Recover deleted oracle flashback point

I have accidentally deleted a flashback point in a oracle 11g database,Is there a way to recover the restore point PS:If I have a **flashback point A** which was created **first**, and **flashback point B** which was created **later**.If I drop **flashback point B** and flashback to **flashback point A** will I be able to recover **flashback point B**. PPS: there are no other backups to recover from.