Using Cc1ccc2[nH]c3c(c2c1)CCNC3(C(=O)OC(C)(C)C)C1(NC(=O)OCc2ccccc2)CCC1 to produce Cc1ccc2[nH]c3c(c2c1)CCNC3C1(NC(=O)Oc2ccccc2)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.