Using O=C(O)c1ccccn1, CC(NC(=O)OC(C)(C)C)C(=O)Nc1cc(Cl)cc(N)n1 to produce CC(NC(=O)OC(C)(C)C)C(=O)Nc1cc(Cl)cc(NC(=O)c2ccccn2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.