Using CC(=O)OCCBr, Cn1nc(O)c(-c2ccc3c(c2)OCO3)c1N to produce CC(=O)OCCOc1nn(C)c(N)c1-c1ccc2c(c1)OCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.