[Question]
c1ccc2c3c(ccc2c1)-c1cccc2cccc-3c12

[Answer]
[C20H12]

[Question]
Oc1c(Cl)cccc1Cl

[Answer]
[C6H4Cl2O]

[Question]
COc1ccc2c3c1O[C@H]1[C@@H](O)C=C[C@H]4[C@@H](C2)N(C)CC[C@@]341

[Answer]
[C18H21NO3]

