Using CCOC(=O)c1c2c(nn1C)-c1nc(Nc3ccc(Br)cc3OC)ncc1CCC2 to produce COc1cc(Br)ccc1Nc1ncc2c(n1)-c1nn(C)c(C(=O)O)c1CCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.