Using OCCCBr, COc1cccc(CNc2nccc(-c3cc(N4CCNCC4)c4cc(OC)ccc4c3)n2)c1 to produce COc1cccc(CNc2nccc(-c3cc(N4CCN(CCCO)CC4)c4cc(OC)ccc4c3)n2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.