You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (2S,4R)-4-amino-1-[3-(2-methoxyphenyl)propanoyl]-N-propan-2-ylpyrrolidine-2-carboxamide ?
user
C18H27N3O3
assistant