1675521 SxS SYNTAX score 15 1675526 SXS sodium xylene sulfonate 6 1675529 SXS surface X-ray scattering 6 1675527 SXS solution X-ray scattering 5 1675533 SXS Shixiao San 3 1675534 SXS Soft X-ray Spectrometer 2 1675525 SXS secoxyloganin synthase 1 1675532 SXS Shengxue Syrup 1 1675531 SXS Soft X-ray spectroscopy 1 1675528 SXS streaked x-ray spectrometer 1 1675530 SXS surface X-ray structure 1 1675524 SXS syndrome X score 1