Using O=C1NCC(c2ccc(Cl)cc2)c2cc(N3CCOCC3)sc21, COC(=O)CBr to produce COC(=O)CN1CC(c2ccc(Cl)cc2)c2cc(N3CCOCC3)sc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.