Using Cc1nc2cccc(B3OC(C)(C)C(C)(C)O3)c2nc1NC(C)(C)C, O=C1CCCc2[nH]c(Br)cc21 to produce Cc1nc2cccc(-c3cc4c([nH]3)CCCC4=O)c2nc1NC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.