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 (4E)-2-(2-ethoxyphenyl)-4-[(2-pyridin-2-yl-1,3-thiazol-4-yl)methylidene]-1,3-oxazol-5-one .
user
C20H15N3O3S
assistant