Using COc1nc2cc(Br)cc(CNCC(=O)OC(C)(C)C)c2nc1OC to produce O=C(O)CNCc1cc(Br)cc2[nH]c(=O)c(=O)[nH]c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.