Using COCCl, COc1cc(/C=C2/C(=O)NC(=O)/C2=C/c2ccccc2)cc(OC)c1OC to produce COCN1C(=O)C(=C/c2ccccc2)/C(=C\c2cc(OC)c(OC)c(OC)c2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.