Using CCOC(=O)C(=O)Nc1cc(N2CCc3ccccc3C2)cc(C)n1 to produce Cc1cc(N2CCc3ccccc3C2)cc(NC(=O)CO)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.