Using N=C(N)N1CCN(Cc2ccccc2)CC1, CCOC(=O)CC(C(C)=O)C(=O)OCC to produce CCOC(=O)Cc1c(C)nc(N2CCN(Cc3ccccc3)CC2)nc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.