Using O=C(O)CNC(=O)C1(CS)Cc2ccccc2C1, CC(=O)OC(C)=O to produce CC(=O)SCC1(C(=O)NCC(=O)O)Cc2ccccc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.