Wrong geometry for Porphyrins

[jkrum...@gmail.com]

Hi,

i'm trying around with indigo and noticed that porphyrins are not rendered properly.

See Zn-Protoporphyrin IX: https://www.ebi.ac.uk/chebi/searchId.do?chebiId=28783 (i.png) or  TPyP https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:143769 (j.png)

using the following code

Indigo i = new Indigo();
            i.setOption("aromaticity-model", "generic");
            var io = i.loadMolecule("N1C2=C(C=3NC(C(=C4N=C(C(=C5N=C(C(=C1C=C2)C6=CC=NC=C6)C=C5)C7=CC=NC=C7)C=C4)C8=CC=NC=C8)=CC3)C9=CC=NC=C9");
            io.dearomatize();
            io.layout();
            IndigoRenderer r = new IndigoRenderer(i);
            r.renderToFile(io, "j.png");