You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(4-methoxyphenyl)-3-methyl-N-(3-methyl-1,2-oxazol-5-yl)imidazo[2,1-b][1,3]thiazole-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H16N4O3S
assistant