serialize_exploded

serialize_exploded()

Builds the atom-level serialized form (isomer-insensitive). Each species is replaced by its Specie.serialized form (e.g. H2O+ → "+/H/H/O"), then species tokens are sorted and joined with ".". Reactants and products are separated by "__".

Returns

str

Atom-level canonical key, e.g. "+/H/H/O.H__+/H.H/H/O" for H + H2O+ -> H2O + H+.