Using Cc1c(Oc2ccc(S(C)(=O)=O)cc2F)ncnc1OC1CCNCC1, CC(C)(C)OCCC(=O)O to produce Cc1c(Oc2ccc(S(C)(=O)=O)cc2F)ncnc1OC1CCN(C(=O)CCOC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.