The correct structures & names of ‘Z’ in the following

1. Starting compound:
   Aromatic ring –OH with substituents:

   • COOCH₂CH₃

   • CH₂CH₂SMe

   Reaction with R–CH(COOC₂H₅)₂

   Pathway arrow labeled [a] pathway

2. Intermediate with aromatic ring –OH and COOCH₂CH₃, COOCH₂CH₃ substituents

3. Further intermediate with COOCH₂CH₃ and CH₂CH₂SMe

4. Final product (labeled (I)):
   Aromatic ring –OH, COOCH₂CH₃, COOCH₂CH₃ and CH₂CH₂SMe

Reaction with NH₂CH leads to new intermediate structure.

• Structure of Phthalic acid

• Final product (after hydrolysis H₃O⁺):

  • COOH

  • NH₃⁺ – CH(COOC₂H₅) – CH₂CH₂SMe

  → Results in an amino acid derivative.