Using CCOC(=O)C1=C(COCCN(C)Cc2ccccc2)NC(C)=C(C(=O)OC)C1c1ccccc1Cl to produce CCOC(=O)C1=C(COCCNC)NC(C)=C(C(=O)OC)C1c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.