Using O=C(O)CCC(=O)N1CCC2(CC1)SC(CC(=O)O)C(=O)N2CCc1ccccc1 to produce O=C([O-])CCC(=O)N1CCC2(CC1)SC(CC(=O)O)C(=O)N2CCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.