InChI=1S/2C20H38O7S.Ca/c2*1-5-9-11-16(7-3)14-26-19(21)13-18(28(23,24)25)20(22)27-15-17(8-4)12-10-6-2;/h2*16-18H,5-15H2,1-4H3,(H,23,24,25);/q;;+2/p-2