Using C[C@@H]1COCCN1c1ccc2c(c1)OCCN(C(=O)OC(C)(C)C)C2 to produce C[C@@H]1COCCN1c1ccc2c(c1)OCCNC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.