Source code:
@Grab(group='org.openscience.cdk', module='cdk-bundle', version='2.9')
import org.openscience.cdk.interfaces.*;
import org.openscience.cdk.templates.*;
import org.openscience.cdk.*;
benzene = MoleculeFactory.makeBenzene();
benzene.bonds().each { bond ->
bond.setFlag(CDKConstants.ISINRING, true)
println "Is ring bond: " +
bond.getFlag(CDKConstants.ISINRING)
}
Output:
Is ring bond: true
Is ring bond: true
Is ring bond: true
Is ring bond: true
Is ring bond: true
Is ring bond: true