Using Cc1ccoc1C(=O)Nc1cccc(Oc2ccnc3cc(C(=O)O)sc23)c1, OCCCBr to produce Cc1ccoc1C(=O)Nc1cccc(Oc2ccnc3cc(C(=O)OCCCO)sc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.