Using O=[N+]([O-])c1cccc(S(=O)(=O)OCC2CO2)c1, CCOC(=O)c1c(C)[nH]c2ccc(O)cc12 to produce CCOC(=O)c1c(C)[nH]c2ccc(OCC3CO3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.