Using CC1(C)OCC(CO)O1, Cc1ccc(CSc2nsc(Cl)n2)cc1 to produce Cc1ccc(CSc2nsc(OCC3COC(C)(C)O3)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.