Using COCCl, CN(Cc1nc2cc(Br)ccc2[nH]1)C(=O)OC(C)(C)C to produce COCn1c(CN(C)C(=O)OC(C)(C)C)nc2cc(Br)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.