InChI=1S/2C8HF15O2.Ca.H2O/c2*9-2(10,1(24)25)3(11,12)4(13,14)5(15,16)6(17,18)7(19,20)8(21,22)23;;/h2*(H,24,25);;1H2/q;;+2;/p-2