You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[[4-[(2S)-2-hydroxy-2-(2,4,5-trimethylphenyl)ethoxy]-3-methoxyphenyl]methylamino]ethyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H32N2O4
assistant