You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-(2-cycloheptyloxyethyl)-3-[(8R)-2-ethyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridin-8-yl]urea into molecular formula.
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C18H31N5O2
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