Using O=C(O)c1cc(Cl)cnc1Cl, N=C(N)COCCc1ccccc1Cl to produce N=C(COCCc1ccccc1Cl)NC(=O)c1cc(Cl)cnc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.