Using COC(=O)C[C@@H](Oc1c(Br)cc(-c2c3ccccc3c(Br)c3sc4ccccc4c23)cc1Br)C(=O)OC to produce O=C(O)C[C@@H](Oc1c(Br)cc(-c2c3ccccc3c(Br)c3sc4ccccc4c23)cc1Br)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.