[S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Citadel Advisors LLC 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) £ £ (b) 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5.]
[S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Citadel Advisors LLC 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) £ £ (b) 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5.]
[CUSIP No 26833A105 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)]
[CUSIP No 26833A105 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)]
[CUSIP No. 26833A105 1. Names of Reporting Persons IDG Technology Venture Investment, Inc. 2. Check the Appropriate Box if a Member of a Group (See Instructions) o (a) o (b)]
[CUSIP No. 26833A105 1. Names of Reporting Persons IDG Technology Venture Investment, Inc. 2. Check the Appropriate Box if a Member of a Group (See Instructions) o (a) o (b)]
[2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (b) (a) [_] 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION NUMBER OF 5 SOLE VOTING POWER 6 SHARED VOTING POWER 7 SOLE DISPOSITIVE POWER 8 SHARED DISPOSITIVE POWER 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) 11]
[2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (b) (a) [_] 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION NUMBER OF 5 SOLE VOTING POWER 6 SHARED VOTING POWER 7 SOLE DISPOSITIVE POWER 8 SHARED DISPOSITIVE POWER 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) 11]
