Using CCS(=O)(=O)Nc1nc(CCc2ccc(CC(=O)O)cc2)cs1, CC(C)(C)OC(=O)NN to produce CCS(=O)(=O)Nc1nc(CCc2ccc(CC(=O)NNC(=O)OC(C)(C)C)cc2)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.