Using COc1ccc(Oc2ccc3c(C(=O)Nc4ccc5c(c4)N(C(C)=O)CC5(C)C)cccc3c2)cn1 to produce COc1ccc(Oc2ccc3c(C(=O)Nc4ccc5c(c4)NCC5(C)C)cccc3c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.