Using BrCCOCCBr, CCC1(c2cccc(Oc3cc(Cn4c(CCN)cnc4C)ccc3C#N)c2)CCCCN(C)C1=O to produce CCC1(c2cccc(Oc3cc(Cn4c(CCN5CCOCC5)cnc4C)ccc3C#N)c2)CCCCN(C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.