Using O=C1NC(=O)c2ccccc21, CC(C)C(O)[C@H](C)NC(=O)OC(C)(C)C to produce CC(C)[C@H]([C@H](C)NC(=O)OC(C)(C)C)N1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.