Using COc1ccc(C2=C(c3cn(CCCO)c4ccccc34)C(=O)NC2=O)c2occc12 to produce O=C1NC(=O)C(c2ccc(O)c3ccoc23)=C1c1cn(CCCO)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.