Abstract: A method of generating codes for chemical structures from NMR spectroscopy data comprises receiving spectroscopic data of a chemical compound, inputting the spectroscopic data into a first artificial neural network to generate molecular descriptors, receiving a molecular descriptor from the first artificial neural network, inputting the molecular descriptor a second artificial neural network to convert structure data of the chemical reference compounds to molecular descriptors and to convert the molecular descriptors back to the structure data, and receiving structure data of the chemical compound from the second artificial neural network.