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Convert the IUPAC name of a molecule 4,5-dichloro-N-[(1R)-2-(cyclopentylamino)-1-(4-methylphenyl)-2-oxoethyl]-N-[(4-methoxyphenyl)methyl]-1,2-thiazole-3-carboxamide into molecular formula.
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C26H27Cl2N3O3S
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