Using COC(=O)c1cccc(NC(=O)CNc2cccc(C(C)C)c2)c1 to produce COC(=O)c1cccc(NCCNc2cccc(C(C)C)c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.