You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (2R)-2-(2-methylpropyl)-N'-[[3-[(2-oxopyrrolidin-1-yl)methyl]phenyl]methyl]propanediamide using the IUPAC nomenclature.
user
C19H27N3O3
assistant