Using CCN(CCN1CCCc2cc(NC(=N)c3cccs3)ccc21)C(=O)OC(C)(C)C to produce CCNCCN1CCCc2cc(NC(=N)c3cccs3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.