A convenient notation system for organic structure on the basis of connectivity stack

A convenient notation system for organic structures has been developed for the application of the connectivity stack. A notation arbitrarily encoded for a structure by a user through a rather simple procedure using 35 codes, which have been previously prepared, is automatically canonicalized in a computer. The notation given by the user is standardized according to the rules for rearranging the codes into a dictionary order. The connectivity stack is estimated for each of the standard notations and its permuted derivatives. The notation whose stack is the largest amount is decided to be canonical. This notation method will be widely applicable in the field of structure manipulation because of its extreme simplicity.