Using CCn1ncc2c(-c3ccc(F)cc3C)c(NC(=O)OC(C)(C)C)cnc21 to produce CCn1ncc2c(-c3ccc(F)cc3C)c(NC)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.