Using COC(=O)Cc1cc(Br)c(Oc2ccc3oc(-c4ccccc4)cc3c2)c(Br)c1 to produce O=C(O)Cc1cc(Br)c(Oc2ccc3oc(-c4ccccc4)cc3c2)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.