You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(1,1-dioxothiolan-3-yl)-3-ethyl-2-[(3-ethyl-1,2-oxazol-5-yl)methyl]guanidine into its molecular formula.
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C13H22N4O3S
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