3-[4-Methyl-3-oxo-7-(1-trifluoromethyl-vinyl)-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino]-azetidine-1-carboxylic acid tert-butyl ester (HCID 86727457)|Huagongshe