Using O=C1c2ccccc2C(=O)c2c1ccc1cc(O)ccc21, CCCCON=O to produce O=Nc1c(O)ccc2c3c(ccc12)C(=O)c1ccccc1C3=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.