Cinnamicacid:
OC(=O)\C=C\c1ccccc1

m-Coumaricacid:
OC(/C=C/C1=CC=CC(O)=C1)=O

p-Coumaricacid:
OC(=O)\C=C\c1ccc(O)cc1

Benzaldehyd:
O=Cc1ccccc1

Caffeicacid:
OC(=O)\C=C\c1ccc(O)c(O)c1

3-Hydroxybenzaldehyd:
Oc1cccc(C=O)c1

4-Hydroxybenzaldehyd:
[H]C(=O)c1ccc(O)cc1

3,4-Dihydroxybenzaldehyd:
Oc1ccc(C=O)cc1O