Using CCOC(=O)C(Cc1ccc(OCC(C)(C)c2ccccc2)cc1)SC#N, O to produce CC(C)(COc1ccc(CC2SC(=O)NC2=O)cc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.