Using C[S+](C)(C)=O, O=C(c1ccc(Cl)cc1)C1(n2cnc(Cl)n2)CC1 to produce Clc1ccc(C2(C3(n4cnc(Cl)n4)CC3)CO2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.