Using CCSC[C@H](NC(C)=O)C(=O)O, CSC[C@H](NC(C)=O)C(=O)O to produce CCSC[C@H](NC(C)=O)C(=O)N1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.