Using ClCc1ccnc(Cl)c1, O=C(COCc1ccccc1)N1CCNCC1 to produce O=C(COCc1ccccc1)N1CCN(Cc2ccnc(Cl)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.