Using Cc1nc2cccc(-c3cc4c([nH]3)C(COCc3ccccc3)NC4=O)c2nc1NC1(C)CC1 to produce Cc1nc2cccc(-c3cc4c([nH]3)C(CO)NC4=O)c2nc1NC1(C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.