Using C=CCO[C@H]1[C@H](C)OC(=O)[C@@H](N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)COC[C@@H]1OCC=C to produce CCCO[C@H]1[C@H](C)OC(=O)[C@@H](N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)COC[C@@H]1OCCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.