Using COc1cc(Nc2ncc3c(n2)CCN(C(=O)OC(C)(C)C)C3)cc(OC)c1OC to produce COc1cc(Nc2ncc3c(n2)CCNC3)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.