In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Therefore , three novel sigma receptor ligands with antagonist activity were evaluated in Swiss Webster mice : BD1018 ( 3S - 1 - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 1 , 4 - diazabicyclo [ 4 . 3 . 0 ] nonane ) , BD1063 ( 1 - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 4 - methylpiperazine ) , and LR132 ( 1R , 2S - ( + ) - cis - N - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 2 - ( 1 - pyrrolidinyl ) cyclohexylamine ) .
### Output Text:
Therefore , three novel sigma receptor ligands with antagonist activity were evaluated in Swiss Webster mice : <span class="chemical">BD1018</span> ( <span class="chemical">3S - 1 - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 1 , 4 - diazabicyclo [ 4 . 3 . 0 ] nonane</span> ) , <span class="chemical">BD1063</span> ( <span class="chemical">1 - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 4 - methylpiperazine</span> ) , and <span class="chemical">LR132</span> ( 1R , 2S - ( + ) - cis - N - [ 2 - ( 3 , 4 - dichlorophenyl ) ethyl ] - 2 - ( 1 - pyrrolidinyl ) cyclohexylamine ) . 