Using C=C(C(=O)OCC)c1csc(C2(C)COc3cc4c(cc32)C(C)(C)CCC4(C)C)c1 to produce C=C(C(=O)O)c1csc(C2(C)COc3cc4c(cc32)C(C)(C)CCC4(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.