Using CC(=O)OC(C)=O, Nc1cc2c(Oc3ccc(Cl)cc3)cncc2s1 to produce O=CNc1cc2c(Oc3ccc(Cl)cc3)cncc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.