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)-N-(3-cyanothiophen-2-yl)-2-[(4,5-dimethoxy-2-methylphenyl)methyl-methylamino]propanamide using the IUPAC nomenclature.
user
C19H23N3O3S
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