Standard InChI: InChI=1S/C38H62N2O8SSi2/c1-23-17-37(40-31(39)20-49-37)38(48-51(6,7)8)33(45-23)46-29-16-25-9-10-28-27(35(25,18-30(29)47-38)22-44-50(3,4)5)11-13-34(2)26(12-14-36(28,34)21-41)24-15-32(42)43-19-24/h15,23,25-30,33,41H,9-14,16-22H2,1-8H3,(H2,39,40)/t23-,25+,26-,27+,28-,29-,30-,33+,34-,35-,36+,37+,38?/m1/s1
1.Van Quaquebeke E, Simon G, André A, Dewelle J, El Yazidi M, Bruyneel F, Tuti J, Nacoulma O, Guissou P, Decaestecker C, Braekman JC, Kiss R, Darro F.. (2005) Identification of a novel cardenolide (2''-oxovoruscharin) from Calotropis procera and the hemisynthesis of novel derivatives displaying potent in vitro antitumor activities and high in vivo tolerance: structure-activity relationship analyses., 48 (3):[PMID:15689169][10.1021/jm049405a]