Using CCOC(CN)OCC, CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1nc2c(CBr)cccc2s1 to produce CCOC(CNCc1cccc2sc(NC(=O)OC(C)(C)C)nc12)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.