You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4E,5E,7E)-7-chloro-4-[[[(2E,4Z)-hexa-2,4-dien-3-yl]-methylamino]methylidene]-5-methyl-3-methylidenenona-5,7-dienal The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H26ClNO
assistant