Using O=Cc1cn[nH]c1, CCOP(=O)(CC(=O)Nc1ccccc1NC(=O)OC(C)(C)C)OCC to produce CC(C)(C)OC(=O)Nc1ccccc1NC(=O)/C=C/c1cn[nH]c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.