Using CB(O)O, CCOC(=O)CCNC(=O)c1ccc(-c2cc(C(F)(F)F)cc(Cl)c2C=O)cn1 to produce CCOC(=O)CCNC(=O)c1ccc(-c2cc(C(F)(F)F)cc(C)c2C=O)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.