You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl 2-(1H-indol-3-ylmethylidene)-5-(2-methoxyphenyl)-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate into its molecular formula.
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C26H23N3O4S
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