You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name methyl 1-(2-hydroxyethyl)-5-oxo-4-[3-(3-thiophen-2-yl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)anilino]-2H-pyrrole-3-carboxylate into its molecular formula.
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C23H20N6O4S
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