Using COc1ccc(C2Nc3c(OC)cccc3C(=O)N2c2ccc(OCCCl)cc2)cc1 to produce COc1ccc(-c2nc3c(OC)cccc3c(=O)n2-c2ccc(OCCCl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.