Using BrCC1CC1, Cn1nc(O)c(-c2ccc3c(c2)OCO3)c1N to produce Cn1nc(OCC2CC2)c(-c2ccc3c(c2)OCO3)c1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.