You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (5S)-1-[2-[[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino]ethyl]-5-(pyridin-2-ylmethyl)-1,3-diazinane-2,4,6-trione is given. What is its corresponding molecular formula?
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C18H15ClF3N5O3
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