Using CC(=O)CCCO, O=C(O)c1ccc2c(c1)nc(-c1ccc3nc(-c4cc(Br)ccc4O)ccc3c1)n2C1CCCCC1 to produce O=C(O)c1ccc2c(c1)nc(-c1ccc3nc(CCCO)ccc3c1)n2C1CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.