Using COc1cc(OC)nc(C(Br)c2ccccc2C2=NC(C)(C)CO2)n1, O=C([O-])[O-] to produce COc1cc(OC)nc(C(=O)c2ccccc2C2=NC(C)(C)CO2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.