Using CCOC(=O)c1cn2c(n1)NC(C)=C(C(=O)OC(C)(C)C)C2c1ccc(Cl)cc1Cl to produce CCOC(=O)c1cn2c(-c3ccc(Cl)cc3Cl)c(C(=O)OC(C)(C)C)c(C)nc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.