Using CCCCCCCCCCCCCCCCN1CCN(c2ccc(CCC(=O)OCCCC)cc2)CC1 to produce CCCCCCCCCCCCCCCCN1CCN(c2ccc(CCC(=O)O)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.