Description:

KMol is a simple chemical calculator, which calculates molecular
weights and elemental composition of compounds given their chemical
formula.

KMol is designed to be able to parse any chemical formula that can be
unambiguously interpreted if written as a simple character sequence
(i.e., without subscript and superscript formating). If you can
understand a chemical formula, chances are KMol will understand it in
exactly the same way. If you can't, do you think it is KMol's fault?
KMol can deal with:

- Unlimited number of nested subgroups:
(CH3(C6H3)N(SiMe(CMe3)2))2Y(thf)2(CH(SiMe3)2).
- Multicomponent compounds: K2SO4+Al2(SO4)3+24H2O.
- Fractional coefficients: Cu3.14O2.72.
- User-defined symbols, which override the global defaults.