Using CCOC(=O)CC1(O)Cc2ccccc2N(C)c2ccc(SCC)cc21 to produce CCOC(=O)C=C1Cc2ccccc2N(C)c2ccc(SCC)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.