An example of the use of Parsley to run a molecular dynamics simulation can be found in Supporting Information section 3. Alternatively, the force field files themselves can be found under the openforcefields/offxml subdirectory of the openforcefields GitHub repository. The present Parsley version may be referred to as "Open Force Field (OpenFF) Parsley Force Field (v1.0.0)" on first reference, and "Parsley" thereafter. Newer Open Force Fields are in development, and updates in the OpenFF 1.x series will also be referred to as Parsley, while new major versions will receive updated codenames. To cite Parsley, please reference the latest version of this article and the DOI of the force field version you use. This information is available in the OpenForceField repository, and the present version may be cited as. To provide feedback on the performance of the OpenFF force fields, we highly recommend using the issue tracker at . For toolkit feedback, use . Alternatively, inquiries may be e-mailed to support@openforcefield.org, though responses to e-mails sent to this address may be delayed and GitHub issues receive higher priority. For information on getting started with OpenFF, please see the documentation linked at , and note the availability of several introductory examples.