Using O=c1cc[nH]cc1, Cc1ccc2nc(-c3nc(Br)cnc3N)[nH]c2c1 to produce Cc1ccc2nc(-c3nc(-n4ccc(=O)cc4)cnc3N)[nH]c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.