Write the structural formulas of the esters listed below, name them in two ways; write down and name

Write the structural formulas of the esters listed below, name them in two ways; write down and name the structural formulas of carboxylic acids isomeric to these esters “butyl formate; ethyl acetate; methyl propionate For the last example, write down the structural formulas of all possible isomers and name them.

1. Butyl formate, butyl methanate, formic acid butyl ester, butyl formic ester. Formed from formic acid. 2. Ethyl acetate, ethyl acetate, ethyl ethanoate. Formed from acetic acid. 3. Methyl propionate, methyl propionic acid, methyl propylate. Formed from propanoic acid.
For 1 ether, the general formula is C5H10O2. You can make 4 isomeric acids with the same general formula: pentanoic, 2-methylbutanoic, 3-methylbutanoic, 2,2-dimethylpropanoic. For 2 and 3 ether, the general formula is the same C4H8O2. You can make 2 isomeric acids: butanoic and 2-methylpropanoic. “For the last example, make up the structural formulas of ALL possible isomers and name them” Apparently, this means all isomers, regardless of the class of compounds. The 4 isomers are depicted above (butanoic and 2-methylpropanoic acids, ethyl acetate and methylpropionate).
Also C4H8O2 can be 1,4-dioxane, 1,2-dioxane, 1,3-dioxane, 3-hydroxy-2-butanone, 3-hydroxybutanal, 4-hydroxybutanal, 2-hydroxybutanal.