Aromatic methyl derivative + fumarate > Aromatic methylsuccinate derivative
[H][C:1]([H:18])([H:19])[c:11]1[c:12]([H])[c:13]([H])[c:14]([H])[c:15]([H])[c:16]1-[#6,#8,#9:17]>>[H:19][C:1]([H:18])([#6](-[#6]-[#6](-[#8-])=O)-[#6](-[#8-])=O)[c:11]1[c:12]([H])[c:13]([H])[c:14]([H])[c:15]([H])[c:16]1-[#6,#8,#9:17]
[H][C:1]([H:18])([H:19])[c:11]1[c:12]([H])[c:13]([H])[c:14]([H])[c:15]([H])[c:16]1-[#6,#8,#9:17]
None
[H:19][C:1]([H:18])([#6](-[#6]-[#6](-[#8-])=O)-[#6](-[#8-])=O)[c:11]1[c:12]([H])[c:13]([H])[c:14]([H])[c:15]([H])[c:16]1-[#6,#8,#9:17]
None
