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: Indications for early conversion were neurotoxicity ( 20 ) , ( insulin - dependent ) diabetes mellitus ( IDDM ) ( 5 ) , nephrotoxicity ( 3 ) , gastrointestinal ( GI ) toxicity ( 6 ) , and cardiomyopathy ( 1 ) , and for late conversion were neurotoxicity ( 15 ) , IDDM ( 12 ) , nephrotoxicity ( 3 ) , GI toxicity ( 5 ) , hepatotoxicity ( 6 ) , post - transplant lmphoproliferate disease ( PTLD ) ( 2 ) , cardiomyopathy ( 1 ) , hemolytic anemia ( 1 ) , and pruritus ( 1 ) .
### Output Text:
Indications for early conversion were neurotoxicity ( 20 ) , ( insulin - dependent ) diabetes mellitus ( IDDM ) ( 5 ) , nephrotoxicity ( 3 ) , gastrointestinal ( GI ) toxicity ( 6 ) , and cardiomyopathy ( 1 ) , and for late conversion were neurotoxicity ( 15 ) , IDDM ( 12 ) , nephrotoxicity ( 3 ) , GI toxicity ( 5 ) , hepatotoxicity ( 6 ) , post - transplant lmphoproliferate disease ( PTLD ) ( 2 ) , cardiomyopathy ( 1 ) , hemolytic anemia ( 1 ) , and pruritus ( 1 ) . 