label: 2-acetyl-2-decarboxamidooxytetracycline, (4S-(4alpha,4aalpha,5alpha,5aalpha,6alpha,12aalpha)-isomer)
label_lc: 2-acetyl-2-decarboxamidooxytetracycline, (4s-(4alpha,4aalpha,5alpha,5aalpha,6alpha,12aalpha)-isomer)