Using c1ccncc1, COCc1ncc2c(n1)N(Cc1ccc(Br)cc1)C(=O)C(C)C2 to produce Cc1nc(CO)nc2c1CCC(=O)N2Cc1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.