Using O=C1NC(=O)c2ccccc21, COc1c(CCl)n(C)c(=O)c2ccc(Cl)cc12 to produce COc1c(CN2C(=O)c3ccccc3C2=O)n(C)c(=O)c2ccc(Cl)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.