Fragments C—C—C—C—C and N
Fragments C–C–C–C and S
Fragment C—C—C—P—C—C—C
Fragments N—C—C—C and C—C
Fragments C—N—C—C and C—C—C
Fragment N—C—C—C—C—C—C
Fragments C—C—C—C and N—C
Fragments C—C—N—C—C and C
Fragments N—C—C—C and C—C—C
Fragments C—N—C—C—C and C—C