Using C1=COCCC1, Cn1c(=O)n(CCCO)c(=O)c2cc(Br)cnc21 to produce Cn1c(=O)n(CCCOC2CCCCO2)c(=O)c2cc(Br)cnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.