t

converts to traditional name. This option generates a common name if one is known for the structure. Otherwise, it generates a systematic name, but sometimes uses some traditionally accepted rules instead of the strict application of the IUPAC rules, when that generates a simpler name.

i

converts to IUPAC name (default).

common

generates the most popular common name of a structure. (It fails if none is known.)

common,all

generates all common names of a structure.

source

outputs the name present in the source data (no generation).

cas#

Fetches the CAS Registry Number(s) of the structure, using a public internet webservice. In case the structure corresponds to several CAS Registry Numbers, they are all returned, separated by commas.

ascii

Use only ASCII characters to encode the name.

timeout=<N>

Use at most N seconds for the name to be computed. The default timeout is currently 20 seconds (which should normally be reached exceptionally, for very large structures). A value of 0 means no timeout.