Using O=C1NC(=O)c2ccccc21, CN1CC(Cl)C(=O)Nc2ccccc21 to produce CN1CC(N2C(=O)c3ccccc3C2=O)C(=O)Nc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.