Thinking of the active intermediates, the crown ether ring of icotinib is oxidated to open up to form an aldehyde; the indolylidene ring of famitinib is oxidated accompanied by rearrangement to sort a quinone- imine; the α, β-unsaturated carbonyl team of allitinib is oxidated to form an epoxide, these intermediates https://lioydsmeds.com/product/buy-lenacapavir-online/