You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-ethyl-2-[(9E)-9-[[3-methoxy-4-(4-methylimidazol-1-yl)phenyl]methylidene]-4,6,7,8-tetrahydro-3H-pyrido[2,1-c][1,2,4]oxadiazin-4-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H29N5O3
assistant