Using COC(OC)c1ccc(OCCN2CCOCC2)c(Br)c1, O=C=O to produce COC(OC)c1ccc(OCCN2CCOCC2)c(C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.