You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[(4,5-dimethyl-1,3-thiazol-2-yl)methyl]-1-ethyl-3-[2-(3-fluorophenyl)-2-morpholin-4-ylethyl]guanidine into molecular formula.
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C21H30FN5OS
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