Using COC(=O)c1c[nH]c2cc(Br)c(-c3ccc(-c4ccccc4O)cc3)cc12 to produce O=C(O)c1c[nH]c2cc(Br)c(-c3ccc(-c4ccccc4O)cc3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.