Using CN(C(=O)OC(C)(C)C)C1(C)CCC(Oc2ncnc3sc4c(c23)[C@@H](CC#N)CC4)CC1, [Li]O to produce CN(C(=O)OC(C)(C)C)C1(C)CCC(Oc2ncnc3sc4c(c23)[C@@H](CC(N)=O)CC4)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.