Using COC(=N)C(O)c1ccc(Cl)cc1Cl, Nc1cccc(N)c1NCCO to produce Nc1cccc2nc(C(O)c3ccc(Cl)cc3Cl)n(CCO)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.