Using O=C1CCCC(=O)C1, Nc1c(C=O)cnn1-c1ccc(F)cc1 to produce O=C1CCCc2nc3c(cnn3-c3ccc(F)cc3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.