Using O=C1CCOCC1Br, COC(=O)c1ccc(C)c(C(=N)N)c1 to produce COC(=O)c1ccc(C)c(-c2nc3c([nH]2)COCC3)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.