IUPAC Nomenclature of esters
This video explains how to name esters systematically. It contains plenty of examples and practice problems including esters with branches and complex substituents plus esters with other functional groups such as aldehyde, ketone etc. It shows you how to tell which group has more priority and how to count the number of carbon atoms to determine what the parent name of each portion should be. The examples in this video also include benzene rings, cycloalkyl ring, diesters, triesters etc.