Using COC(=O)CC1CCCN(C(=O)c2ccc(NC(=O)COc3ccccc3)cc2)c2ccccc21 to produce O=C(O)CC1CCCN(C(=O)c2ccc(NC(=O)COc3ccccc3)cc2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.