Using O=C([O-])O, CCN(CC)CCN1C(=O)c2ccccc2C1c1ccccc1C(=O)O to produce CCN(CC)CCN1C(=O)c2ccccc2C1c1ccccc1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.