Using CN1CCCN(c2ccc(CN)cc2)CC1, O=C(Nc1ccc(Cl)cn1)c1cccnc1Cl to produce CN1CCCN(c2ccc(CNc3ncccc3C(=O)Nc3ccc(Cl)cn3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.