Using CCNC(=O)c1cc(F)c(N2CCN(C(=O)OC(C)(C)C)CC2)cc1F to produce CCNC(=O)c1cc(F)c(N2CCNCC2)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.