Using C1COCCO1, O=C1Cc2cccc(S(=O)(=O)c3ccccc3)c2N1 to produce Nc1c(CC(=O)O)cccc1S(=O)(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.