b-D-Glucopyranoside,(1R,2S,4aR,4bR,6'S,6aR,7R,8S,10aR,10bR,12aS)-7-[(b-D-glucopyranosyloxy)methyl]-6'-[(1S)-2-(b-D-glucopyranosyloxy)-1-methylethyl]octadecahydro-1-hydroxy-4a,4b,7,10a-tetramethylspiro[chrysene-2(1H),3'(4'H)-[2H]pyran]-8-yl2-O-b-D-glucopyr