Using CC(=O)Oc1c(C)c(-c2cc3cc(C=O)ccc3o2)oc(=O)c1C, O=C1CSC(=O)N1 to produce Cc1c(-c2cc3cc(C=C4SC(=O)NC4=O)ccc3o2)oc(=O)c(C)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.