Using CC(C)(C)OC(=O)N1CCC(/C=C/C(=O)N2CCC[C@@H](C(=O)O)C2)CC1, CCOC(=O)CCN to produce CCOC(=O)CCNC(=O)[C@@H]1CCCN(C(=O)/C=C/C2CCN(C(=O)OC(C)(C)C)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.