Using NN=Cc1ccc(CCCCC(=O)NC(CCS(=O)Cc2ccccc2)CC(=O)O)cc1, O to produce NN=Cc1ccc(CCCCC(=O)NC(CCS(=O)(=O)Cc2ccccc2)CC(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.