CAS No:188112-75-6||Chemical Formula:C24H26N4O7S||Molecular Weight: 514. 55300||Exact Mass: 514.15222 ||(2S,5R,6R)-6-((R)-2-((R)-2-amino-2-(4-hydroxyphenyl)acetamido)-2-(4-hydroxyphenyl)acetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid