You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-methyl-2-[(4-methylsulfanylbutan-2-ylcarbamoylamino)methyl]-1,3-thiazole-5-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H19N3O3S2
assistant