Balanced Equation for Sulfathiazole Synthesis

Regarding the synthesis of sulfathiazole from 2-aminothiazole and p-acetamidobenzenesulfonyl chloride, I would like balanced equations for each step, i.e. for the initial reaction resulting in the intermediate and the subsequent hydrolysis step resulting in the actual product, i.e. sulfathiazole.

Note: I did not use pyridine in this reaction, but acetonitrile (with potassium carbonate to keep acetonitrile dry) instead. For obtaining sulfathiazole, HCl was used as the intermediate.