Using [Cl-], CCn1cc(C(=O)O)c(=O)c2c([N+]#N)c3c(cc21)OCO3 to produce CCn1cc(C(=O)O)c(=O)c2c(Cl)c(O)c(O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.