Using NCCOCc1ccc(C(=O)c2ccccc2)cc1, O=C=Nc1ccccc1 to produce O=C(NCCOCc1ccc(C(=O)c2ccccc2)cc1)Nc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.