Using CCOC(=O)C1CCN(C2CC3CCC(C2)N3C(=O)OCC)CC1 to produce CCOC(=O)N1C2CCC1CC(N1CCC(C(=O)O)CC1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.