Using COC(=O)CBr, CCOc1ccc(-c2nc(-c3ccc(O)c(C(=O)OC)c3)cs2)cc1OCC to produce CCOc1ccc(-c2nc(-c3ccc(OCC(=O)OC)c(C(=O)OC)c3)cs2)cc1OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.