Using CCOCC, Cc1[nH]c2cccc3c2c1C[C@@H]1C3=C[C@@H](C(=O)O)CN1C to produce COC(=O)[C@@H]1C=C2c3cccc4[nH]c(C)c(c34)C[C@H]2N(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.