You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-ethyl-3-[(4-nitrophenyl)methyl]-2-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]guanidine;hydroiodide .
user
C19H22F3IN4O3
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