Using CCOC(=O)CBr, Nc1nc(-c2ccco2)c2[nH]nnc2n1 to produce CCOC(=O)Cn1nnc2c(-c3ccco3)nc(N)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.