Using CC(C)(C)OC(=O)N[C@@H](C(=O)O)c1ccccc1, COC(=O)c1csc(NC(=O)[C@@H](N)Cc2ccccc2)n1 to produce COC(=O)c1csc(NC(=O)[C@H](Cc2ccccc2)NC(=O)[C@H](NC(=O)OC(C)(C)C)c2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.