All communications hereunder shall be in writing and effective only upon receipt and (i) if sent to the Purchaser, will be mailed, hand delivered, couriered or sent by fax transmission or electronic mail and confirmed to it at Citigroup Commercial Mortgage Securities Inc., 390 Greenwich Street, 5th Floor, New York, New York 10013, to the attention of Paul Vanderslice, fax number (212) 723-8599, and 390 Greenwich Street, 7th Floor, New York, New York 10013, to the attention of Richard Simpson, fax number (646) 328-2943, and 388 Greenwich Street, 17th Floor, New York, New York 10013, to the attention of Ryan M. O’Connor, fax number (646) 862-8988, and with an electronic copy emailed to Richard Simpson at richard.simpson@citi.com and to Ryan M. O’Connor at ryan.m.oconnor@citi.com, (ii) if sent to the Seller, will be mailed, hand delivered, couriered or sent by fax transmission or electronic mail and confirmed to it at Macquarie US Trading LLC d/b/a Principal Commercial Capital, 125 West 55th Street, New York, New York 10019, to the attention of Joshua Karlin, and (iii) in the case of any of the preceding parties, such other address as may hereafter be furnished to the other party in writing by such parties.