Using CC(C)(C)OC(=O)NCCNc1ccc2c3c(nn2CCNC(=O)OC(C)(C)C)-c2cnccc2C(=O)c13 to produce NCCNc1ccc2c3c(nn2CCN)-c2cnccc2C(=O)c13, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.