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 5,6-bis(4-methylphenyl)-N-[(2R)-1-phenylmethoxybutan-2-yl]pyrazine-2-carboxamide using the IUPAC nomenclature.
user
C30H31N3O2
assistant