O=C(CCl)N1CCN(Cc2ccc(-c3cccn3S(=O)(=O)c3ccccc3)s2)CC1
O=C(CCl)N1CCN(Cc2ccc(-c3ccc4ccccc4c3CBr)s2)CC1
O=C(CCl)N(c1ccc(-c2cccc3c2oc2ccc4ccccc4c23)cc1)C1C=CS(=O)(=O)C1
N#Cc1c(Br)cccc1-c1ccccc1S(=O)(=O)N1CCN(C(=O)CCl)CC1
O=C(CCl)N(c1ccc(-c2ccc3oc4ccc5ccccc5c4c3c2)cc1)C1C=CS(=O)(=O)C1
CC(C#N)S(=O)(=O)Nc1ccnc(-c2ccc(S(=O)(=O)N3CCN(C(=O)CCl)CC3)s2)c1
CC(C)(C)[Si](C)(C)OCCN1CCN(S(=O)(=O)c2ccc(-c3cccc(CN4CCN(C(=O)CCl)CC4)c3)cc2)CC1
O=C(CCl)N1CCN(S(=O)(=O)c2ccc(C3CC3)cc2)CC1
Nc1cc(-c2cc(S(=O)(=O)N3CCN(C(=O)CCl)CC3)ccc2F)cs1
O=Cc1cc(-c2ccc(CN3CCN(C(=O)CCl)CC3)s2)ccc1[N+](=O)[O-]
top 10 proposals on Alex M. Clark's web page https://molmatinf.com/covid19/, synthesis simplicity is evaluated by the analysis of direct (not reverse) reactions, all of them should be one-step reactions, sorted by fragment %