Are there any related structure from an asprin? To show how important an asprin is from using a carboxylic acid.

Question

You need to clarify your question.

I need to produce a related structure of the molecular features of carboxyli acid, size hydrocarbon group on ester and distance between oxygeeb atom joined to the ring and -oh group of the carboxylic acid?

I have got no ideas on where to start.