Using O=C(Cl)C12CC3CC(CC(C3)C1)C2, CC(C)(O)c1ccncc1 to produce CC(C)(OC(=O)C12CC3CC(CC(C3)C1)C2)c1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.