Using CCOC(=O)C(Cc1ccc(O)c(F)c1)OCC, OCCCc1csc(-c2ccccc2)n1 to produce CCOC(=O)C(Cc1ccc(OCCCc2csc(-c3ccccc3)n2)c(F)c1)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.