How to correctly write the condensed formula for salicylic acid I am struggling to find the right way to write the condensed formula for salicylic acid

Some people say CHCHCHCHC(OH)C(COOH) 
Or (CH)4C(OH)C(COOH)

Others say C6H4(OH)COOH (which doesn't seem to make sense since it looks to me like it could represent many isomers and not just one molecule like a condensed formula is supposed to)

Which (if any) is correct?
Some people say $\ce{CHCHCHCHC(OH)C(COOH)}$ Or $\ce{(CH)4C(OH)C(COOH)}$


Both of these are definitely wrong since it seems to indicate some sort of alkene. 


  Others say $\ce{C6H4(OH)COOH}$


This is much better since it "hints" that $\ce{C6H4}$ is a benzene ring. With only 4 hydrogens and what seems to be two substitution groups that fits. Note there is no indication of the relative position of the groups. So this would represent either 3-Hydroxybenzoic acid or 4-Hydroxybenzoic acid as well. 

The basic empirical formula would be $\ce{C7H6O3}$ which would represent probably dozens of molecules. 

So the best way to denote the particular molecule specifically is to name it, or to draw out the whole 2D structure.