Using Cn1cnc(CN)n1, Clc1nn2c(-c3ccccc3)nnc2cc1C1CCC1 to produce Cn1cnc(CNc2nn3c(-c4ccccc4)nnc3cc2C2CCC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.