preferred_name: DIPHENYLMETHYL (6R,7R)-7-(((2Z)-5-((3-METHYL-2-BUTEN-1-YL)OXY)-1,5-DIOXO-2-(2-(((PHENYLMETHOXY)CARBONYL)AMINO)-4-THIAZOLYL)-2-PENTEN-1-YL)AMINO)-8-OXO-5-THIA-1-AZABICYCLO(4.2.0)OCT-2-ENE-2-CARBOXYLATE