Using O=C(c1cccnc1Oc1cc(Cl)ccc1Cl)N1CCNc2ccccc21, O=C1CCC1 to produce O=C(c1cccnc1Oc1cc(Cl)ccc1Cl)N1CCN(C2CCC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.