Using CCOCCO, Cc1ccc(-c2nc(N)nc3c2nnn3Cc2cccc(CBr)n2)o1 to produce CCOCCOCc1cccc(Cn2nnc3c(-c4ccc(C)o4)nc(N)nc32)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.