Synonyms: RifamycinP;9,4-(Epoxypentadeca[1,11,13]trienimino)furo[2',3':7,8]naphtho[1,2-d]thiazole,rifamycin P deriv.;9,4-(Epoxypentadeca[1,11,13]trienimino)furo[2',3':7,8]naphtho[1,2-d]thiazole-10,26(9H)-dione,16-(acetyloxy)-5,6,18,20-tetrahydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-,[9S-(9R*,12E,14R*,15S*,16R*,17S*,18S*,19S*,20R*,21R*,22E,24Z)]-;[9S-(9R*,12E,14R*,15S*,16R*,17S*,18S*,19S*,20R*,21R*,22E,24Z)]-16-(Acetyloxy)-5,6,18,20-tetrahydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-9,4-(epoxypentadeca[1,11,13]trienimino)furo[2',3':7,8]naphtho[1,2-d]thiazole-10,26(9H)-dione