Using CON1CCC(Sc2cn(C)c3ccc(Br)cc23)CC1, O=C=O to produce CON1CCC(Sc2cn(C)c3ccc(C(=O)O)cc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.