Using O=C1C[C@@H](C(=O)O)N(C(=O)CCS)C1, [OH-] to produce O=C1C[C@@H](C(=O)O)N(C(=O)CCSSCCC(=O)N2CC(=O)C[C@H]2C(=O)O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.