It seems 

c4ccc2c(cc1=Nc3ncccc3(Cn12))c4

does not parse using the latest CDK master, but does parse fine using http://apps.ideaconsult.net:8080/ambit2/depict?search=c4ccc2c%28cc1%3DNc3ncccc3%28Cn12%29%29c4&smarts=

I'm not sure what version ambit is using but could somebody confirm this issue with the latest master?


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Rajarshi Guha | http://blog.rguha.net
NIH Center for Advancing Translational Science