Using CC(C)(C)OC(=O)n1c(=O)[nH]c2c(-c3ccc(-c4scc5c4[nH]c(=O)n5C(=O)OC(C)(C)C)cc3)scc21 to produce O=c1[nH]c2csc(-c3ccc(-c4scc5[nH]c(=O)[nH]c45)cc3)c2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.