Using CC[O+](CC)CC, C=Cc1cc2c(O[C@@H]3C[C@@H](C(=O)OC)N(C(=O)OC(C)(C)C)C3)cc(=O)[nH]c2cc1OC to produce C=Cc1cc2c(O[C@@H]3C[C@@H](C(=O)OC)N(C(=O)OC(C)(C)C)C3)cc(OCC)nc2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.