Using COc1ccc([C@H]2C[C@@H]2COc2nc3cccnc3cc2C2CCCN(C(=O)OC(C)(C)C)C2)nc1 to produce COc1ccc([C@H]2C[C@@H]2COc2nc3cccnc3cc2C2CCCNC2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.