You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(E)-[2-(furan-2-ylmethyl)cyclohexylidene]amino] N-[(1E,3Z)-5-chlorohexa-1,3,5-trienyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H21ClN2O3
assistant