Using CC(C)n1cc(C(=O)c2cncc(NC(=O)Cc3cccc(CO)c3)c2)c2cncnc21 to produce CC(C)n1cc(C(=O)c2cncc(NC(=O)Cc3cccc(C=O)c3)c2)c2cncnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.