label: (9,11)(11,12)-dideoxa-9 alpha,11 alpha-dimethylmethano-11,12-methano-13,14-dihydro-13-aza-14-oxo-15-cyclopentyl-16,17,18,19,20-pentanor-15-epi-TXA2
label_lc: (9,11)(11,12)-dideoxa-9 alpha,11 alpha-dimethylmethano-11,12-methano-13,14-dihydro-13-aza-14-oxo-15-cyclopentyl-16,17,18,19,20-pentanor-15-epi-txa2