Using Cc1c2c(c(C(C)(O)c3ccc(C(C)C)cc3)c(C)c1NC(=O)OC(C)(C)C)OCC2 to produce C=C(c1ccc(C(C)C)cc1)c1c(C)c(N)c(C)c2c1OCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.