Using CS(=O)(=O)Cl, Cc1oc2c(Br)cc(C(CCO)CCO)cc2c1C to produce Cc1oc2c(Br)cc(C(CCOS(C)(=O)=O)CCOS(C)(=O)=O)cc2c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.