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For the birth of a first child,the first stage of labour usually lasts
Anti-aromatic
Anti-aromatic compounds are cyclic molecules that are destabilized by the presence of conjugated π electrons, failing to meet the criteria for aromatic stability.
O-bromostyrene
An organic compound composed of a bromine atom bonded to the benzene ring of styrene, used in various chemical synthesis processes.
Structure
A configuration or arrangement of elements in a material or object.
Isopropylbenzaldehyde
A compound with a benzene ring attached to an isopropyl group and an aldehyde group.
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