Using CCn1nc(Nc2nc3c(cc(C(=O)N(C4CC4)C4CC4)n3CC)c3c2ncn3C)cc1C=O to produce CCn1nc(Nc2nc3c(cc(C(=O)N(C4CC4)C4CC4)n3CC)c3c2ncn3C)cc1CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.