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 2-[2-(2-chlorophenyl)-2-morpholin-4-ylethyl]-1-ethyl-3-(3-methoxypropyl)guanidine is given. What is its corresponding molecular formula?
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C19H31ClN4O2
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