Using CCOC(=O)C1CCN(c2nsc(N3CCN(C(=O)Nc4noc5ccccc45)CC3)n2)CC1 to produce O=C(O)C1CCN(c2nsc(N3CCN(C(=O)Nc4noc5ccccc45)CC3)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.