Using CCOC(=O)CCCCCC(C(=O)Nc1ccccc1)C(=O)Nc1ccccc1 to produce O=C(O)CCCCCC(C(=O)Nc1ccccc1)C(=O)Nc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.