C[Si](C)(CCCC(=O)O)O[Si](CCC(F)(F)F)(CCC(F)(F)F)CCC(F)(F)F    mol31904    0_1
C[Si](C)(CCCC(=O)[O-])O[Si](CCC(F)(F)F)(CCC(F)(F)F)CCC(F)(F)F    mol31904    -1_1