Using CC1(CC[C@H]2C[C@@H](Cc3ccccc3)N(Cc3ccccc3)C2=O)OCCO1 to produce CC1(CC[C@H]2C[C@@H](Cc3ccccc3)NC2=O)OCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.