You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-amino-N-[(Z)-(3,4-diethoxyphenyl)methylideneamino]-4-ethyl-1,3-thiazole-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H22N4O3S
assistant