Input interpretation
D-glucose-13 C6 | edge rules
Result
{1->9, 1->11, 7->2, 2->20, 8->3, 3->21, 10->4, 4->22, 11->5, 5->23, 6->12, 6->24, 7->8, 7->9, 7->13, 8->10, 8->14, 9->12, 9->15, 10->11, 10->16, 11->17, 12->18, 12->19}