Using ClCc1csc(-c2ccccc2)n1, COC(=O)CC1COc2cc(O)ccc21 to produce COC(=O)CC1COc2cc(OCc3csc(-c4ccccc4)n3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.