Using COC(=O)COc1cccc2c1CCC(CNC(=O)OC(c1ccccc1)c1ccccc1)C2 to produce O=C(O)COc1cccc2c1CCC(CNC(=O)OC(c1ccccc1)c1ccccc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.