Returns the element of each atom, whether it was written aromatic, its formal charge, its explicit hydrogen count if one was given, and the bonds as index triples with the order. Ring-closure bonds are reported separately because the ring perception starts from them.
Examples
p <- morie_avalon_parse("c1ccccc1O")
str(p, max.level = 1)
#> List of 6
#> $ el : chr [1:7] "C" "C" "C" "C" ...
#> $ arom : int [1:7] 1 1 1 1 1 1 0
#> $ chg : int [1:7] 0 0 0 0 0 0 0
#> $ hexp : int [1:7] -1 -1 -1 -1 -1 -1 -1
#> $ bonds :List of 7
#> $ closures: int 6