You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[2-[2-[[5-(imidazo[2,1-b][1,3]thiazole-6-carbonylamino)-2-methoxybenzoyl]amino]ethoxy]ethoxy]acetic acid into its molecular formula.
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C20H22N4O7S
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