(N-(7-(nitrobenz-2-oxa-1,3-diazol-4-yl))-7-amino-3alpha,12alpha-dihydroxycholan-24-oyl)-2-aminoethanesulfonate

2-[[(4R)-4-[(3R,5R,7S,10S,12S,13R,17R)-3,12-dihydroxy-10,13-dimethyl-7-[(2-nitro-8-oxa-7,9-diazabicyclo[4.3.0]nona-2,4,6,9-tetraen-5-yl)amino]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoyl]amino]ethanesulfonic acid