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