Using COC(=Cc1ccc(OC(C)=O)cc1)C(=O)NC1CCC(C)CC1, O=C([O-])[O-] to produce COc1cc(C=CC(=O)NC2CCC(C)CC2)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.