Using CCn1cc(NC(=O)Cc2ccc(Oc3ccnc4ccc(C(=O)O)cc34)cc2OC)cn1, CN to produce CCn1cc(NC(=O)Cc2ccc(Oc3ccnc4ccc(C(=O)NC)cc34)cc2OC)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.