Using CCOC(=O)CCC(=O)Nc1cccc(N2CCN(C(=O)OCc3ccccc3)CC2)c1C to produce CCOC(=O)CCC(=O)Nc1cccc(N2CCNCC2)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.