Using CC1(C)NC(=O)c2ccc(-n3ccc4cncnc43)c(=O)n21 to produce CC1(C)NC(=O)c2ccc(N3CCc4cncnc43)c(=O)n21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.