Using COC(=O)c1cccc(-c2nc(Nc3cccc(N4CC5(COC5)C4)c3)c3ncsc3n2)c1 to produce O=C(O)c1cccc(-c2nc(Nc3cccc(N4CC5(COC5)C4)c3)c3ncsc3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.