You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you tell me the SMILES representation for the molecule N-[(4-cyanophenyl)methyl]-2-[(1-methylsulfonylcyclopropyl)methyl]-1,6-dioxo-3,4-dihydropyrido[1,2-a]pyrazine-7-carboxamide ?
user
CS(=O)(=O)C1(CN2CCN3C(=CC=C(C(=O)NCC4=CC=C(C#N)C=C4)C3=O)C2=O)CC1
assistant