You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3R)-N-[(2R)-1-(4-methoxyanilino)-3-methyl-1-oxobutan-2-yl]-1,2,3,4-tetrahydroisoquinoline-3-carboxamide .
user
C22H27N3O3
assistant