Using COC(=O)c1ccncc1-c1cnc2c(c1)CCCN2C(=O)OC(C)(C)C to produce COC(=O)c1ccncc1-c1cnc2c(c1)CCCN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.