Using O=C([O-])O, COCC1(c2ccc(NC(=O)c3ccccc3N(Cc3ccncc3)C(C)=O)cc2)CC1 to produce COCC1(c2ccc(NC(=O)c3ccccc3NCc3ccncc3)cc2)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.