You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-chloro-5-methylphenoxy)-N-[(1R)-2-morpholin-4-ium-4-yl-1-phenylethyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H26ClN2O3+
assistant