Using O=C(Cc1cccs1)C1C(=O)Nc2ccccc21, CC(=O)OC(C)=O to produce CC(=O)N1C(=O)C(C(=O)Cc2cccs2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.