Using COc1cccc(CCCCc2ccccc2OCC2CCCN(C(=O)OC(C)(C)C)C2)c1 to produce COc1cccc(CCCCc2ccccc2OCC2CCCNC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.