Using CCO, CN1CCC(=C2c3ccccc3CCc3sc(C(=O)O)cc32)CC1 to produce CCOC(=O)c1cc2c(s1)CCc1ccccc1C2=C1CCN(C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.