Using CCO, CN1CC=C(c2c[nH]c3ccc(C(=O)O)cc23)CC1 to produce CCOC(=O)c1ccc2[nH]cc(C3=CCN(C)CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.