Using O=C(O)c1cccc(F)n1, CCCc1c(CNCC(C)C)ncn2ncnc12 to produce CCCc1c(CN(CC(C)C)C(=O)c2cccc(F)n2)ncn2ncnc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.