A little PoC using ChemWriter, a pure JavaScript chemical structure editor from Metamolecular.
Some custom controls...
[PHENOL]
CHEMW2 0526111321132D
Created by David Simpson - /
7 7 0 0 0 0 999 V2000
3.2222 -4.8056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
4.0882 -5.3056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
4.9543 -4.8056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
4.9543 -3.8056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
4.0882 -3.3056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
3.2222 -3.8056 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0
5.8203 -5.3056 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0
1 2 2 0 0 0 0
2 3 1 0 0 0 0
3 4 2 0 0 0 0
4 5 1 0 0 0 0
5 6 2 0 0 0 0
6 1 1 0 0 0 0
3 7 1 0 0 0 0
M END