bonds = Join[
Partition[Range[6], 2, 1, {1, 1}],
Partition[Range[7, 12], 2, 1, {1, 1}],
{{6, 7}, {11, 13}, {2, 14}}
];
SeedRandom[123]
mol1 = Molecule[ConstantArray["C", Max[bonds]], bonds]
mol1 = Molecule[ConstantArray["C", Max[bonds]], RandomSample[bonds]]
MoleculeValue[{mol1, mol2}, "SMILES"]
MoleculeEquivalentQ[mol1, mol2]