Using CN1Cc2c(-c3nc(CN4C(=O)c5ccccc5C4=O)no3)ncn2-c2ccccc2C1=O to produce CN1Cc2c(-c3nc(CN)no3)ncn2-c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.