Using O=C1CCC(=O)N1Br, CCOC(=O)c1nc2cnn(-c3c(F)cccc3F)c2nc1O to produce O=c1[nH]c2c(cnn2-c2c(F)cccc2F)nc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.