install.packages("chents") library(chents) atrazine <- pai.new("atrazine") atra <- pai$new("atrazine") atra atra$mw library(units) as_unit("3 g/mol") as_units(3, g/mol) as_units(3, "g/mol") cym <- pai$new("cymoxanil") cym py_install("rdkit") reticulate::py_install("rdkit") cym <- pai$new("cymoxanil") library(reticulate) py_install("rdkit") rdkit <- py_import(rdkit) rdkit <- import("rdkit") rdkit chent$new("isopropanol")