Using CCc1nc2c(C)cc(C)nc2n1Cc1cnc(N(C(=O)OC(C)(C)C)c2ccccc2)nc1 to produce CCc1nc2c(C)cc(C)nc2n1Cc1cnc(Nc2ccccc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.