Using CCON, CCC(=O)C1=C(O)CC(c2ccc(Sc3ccc(S(C)(=O)=O)cn3)cc2)CC1=O to produce CCON=C(CC)C1=C(O)CC(c2ccc(Sc3ccc(S(C)(=O)=O)cn3)cc2)CC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.