Using CCOC(=O)CN1C(C)(C)CC(N2C=CC=CCC2=O)CC1(C)C, CN1C(C)(C)CC(O)CC1(C)C to produce CN1C(C)(C)CC(OC(=O)CN2C(C)(C)CC(N3C=CC=CCC3=O)CC2(C)C)CC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.