Using COc1cc2c(Nc3cccc4c3OCO4)ncnc2cc1OCCC1(O)CCNCC1, C=O to produce COc1cc2c(Nc3cccc4c3OCO4)ncnc2cc1OCCC1(O)CCN(C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.