You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-hydroxy-5-[2-(4-methoxyphenyl)imino-3-(1-methoxypropan-2-yl)-1,3-thiazol-4-yl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H23N3O4S
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