Using O=C(CCc1cc(Br)c(OC(=O)c2c3ccccc3nc3ccccc23)c(Br)c1)OCc1ccccc1 to produce O=C(O)CCc1cc(Br)c(OC(=O)c2c3ccccc3nc3ccccc23)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.