Using O=C(Nc1cnccn1)C(Br)CC1CCCC1, O=c1cc(Oc2ccccc2C(F)(F)F)cn[nH]1 to produce O=C(Nc1cnccn1)C(CC1CCCC1)n1ncc(Oc2ccccc2C(F)(F)F)cc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.