You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-amino-N-[(4-ethoxy-3-methoxyphenyl)methylideneamino]-4-ethyl-1,3-thiazole-5-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C16H20N4O3S
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