Using O=C(O)CCC(=O)c1cccs1, NC[C@H]1CN(c2ccc(N3CCOCC3)c(F)c2)C(=O)O1 to produce O=C(CCC(=O)c1cccs1)NC[C@H]1CN(c2ccc(N3CCOCC3)c(F)c2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.