Using C1COCCN1, O=C(O)Cc1cncc(N2CCc3cc(Cl)ccc3C2=O)c1 to produce O=C(Cc1cncc(N2CCc3cc(Cl)ccc3C2=O)c1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.