Using NC1C2CC3CC(C2)CC1C3, O=C(O)c1cccc(Br)n1 to produce O=C(NC1C2CC3CC(C2)CC1C3)c1cccc(Br)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.