You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(E)-(3-ethoxy-4-hydroxy-5-nitrophenyl)methylideneamino]-3-(2-morpholin-4-ylethyl)thiourea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H23N5O5S
assistant