Using COc1ccc2ncc(F)c(N3CCN(CCNC(=O)OC(C)(C)C)CC3)c2n1 to produce COc1ccc2ncc(F)c(N3CCN(CCN)CC3)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.