You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[3-[5-(1-hydroxyethyl)-1,2,4-oxadiazol-3-yl]cyclobutyl]-5-phenyl-1,2-oxazole-3-carboxamide into its molecular formula.
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C18H18N4O4
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