Using SCCCS, CCOC(=O)C(C)(C)Cc1cccc(C(=O)c2cccc(CC(C)(C)C(=O)OCC)c2)c1 to produce CCOC(=O)C(C)(C)Cc1cccc(C2(c3cccc(CC(C)(C)C(=O)OCC)c3)SCCCS2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.