You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-(4-ethoxyphenyl)-7-(thiophen-2-ylmethylidene)-2,4-dihydro-[1,3]thiazolo[3,2-a][1,3,5]triazin-6-one .
user
C18H17N3O2S2
assistant