The structural analysis of the title compound. C14H14N2O4S. particularly the presence of an acetyl group at the exocyclic N atom and the C(H)—C(O2CMe)—N acetoxy group in the thiazole ring. may indicate that one of the starting materials. https://www.roneverhart.com/Turbosound-TS-18SW700-8A-18-Low-Frequency-Loudspeaker-p31480/