Using CC(=O)OCCC(C)n1c(COC(C)=O)nc2cnc3cc(Br)ccc3c21 to produce CC(CCO)n1c(CO)nc2cnc3cc(Br)ccc3c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.